WO2021157271A1 - Pest control aerosol and pest control method - Google Patents

Abstract

Provided is a pest control aerosol which is of a fixed-amount spraying type used for spatial treatment and which has improved control effect against creeping pests.　This pest control aerosol is obtained by filling an aerosol container, equipped with a fixed-amount spraying valve, with a spraying agent and an aerosol stock solution containing a solvent and an insecticide component having a vapor pressure less than 1.5×10^-3mmHg at 30°C. The aerosol stock solution has a specific gravity of 0.82-1.25 at 20°C and a viscosity η₁₀ of 3.2-60.0 mPa·s at 10°C, and has a ratio η₃₀/η₁₀ of 0.40-0.92 between the viscosity η₃₀ at 30°C and the viscosity η₁₀ at 10°C. A single spray volume of the fixed-amount spraying valve is 0.1-3.0 mL.

Description

Pest control aerosols and pest control methods

The present invention is an aerosol for pest control in which an aerosol stock solution containing an insecticidal component and a solvent and a propellant are filled in an aerosol container equipped with a fixed-quantity injection valve, and a pest control method using the aerosol for pest control. It is about.

Targeting crawling pests such as cockroaches and bed bugs that roam the floor and walls, the types of insecticides that are applied to places and paths where crawling pests live include (1) smoke agents and (2) full-volume spray aerosols. , (3) Coated aerosol and (4) Bait agent are typical, and each has characteristics on the dosage form.

(1) Smoke agent and (2) Full-injection aerosol are methods that dissipate the drug to every corner of the room at once and seal the room for a predetermined time to increase the drug concentration, because no one can enter the room during that time. It falls into the category of pharmaceuticals. These preparations are characterized by so-called spatial treatment, in which the released chemicals exert a high extermination effect on crawling pests in the entire treatment space. However, these formulations require time and effort such as curing electric appliances and tableware before treatment and cleaning of jet sediment after treatment, and pay special attention to the safety of the drug. It is hard to say that it is a dosage form that can be easily and frequently adopted because it is necessary to do so.

On the other hand, (3) coating-type aerosols that are locally surface-treated and (4) bait agents that are point-treated correspond to quasi-drugs that have a mild effect on the human body, and are (1) smoke agents and (2). Although it is easier to use than a full-volume injection type aerosol, it is not spatially treated, so the contact efficiency between the drug and the pest is inferior, and it is not always possible to provide an efficient extermination method.

In this way, it has been considered difficult to develop a control agent for crawling pests, which is a quasi-drug even though it is spatially treated.

The present inventors have previously developed a space treatment agent, which is a control agent for pests corresponding to a non-pharmaceutical product, such as (1) a smoke agent and (2) a total amount injection type aerosol. If spray treatment is performed using a quantitative injection type aerosol instead of a formulation, a practically sufficient control effect is obtained, and a diligent study was conducted aiming at a highly safe formulation that can be used even in the presence of people. As a result, he invented a pest control method (see Patent Document 1) that is effective not only for crawling pests but also for flying pests on the day of spraying.

Japanese Unexamined Patent Publication No. 2011-63576

The pest and mite control method of Patent Document 1 is highly practical because it aims to realize a practical extermination effect not only on crawling pests but also on flying pests. In the pest and mite control method, as the spraying characteristic of the aerosol, the sprayed particles after spraying are formed into floating particles and adhesive particles involved in adhesion to a wall surface or the like and sedimentation on a floor surface. The present inventors have diligently studied the quantitative injection type aerosol used for spatial treatment in order to further improve the control effect on cockroach and the like among the crawling pests.

In the study, in order to enhance the control effect against cockroaches among the crawling pests in the spatial treatment, the adhesive particles were given higher priority than the injection characteristics of Patent Document 1, and the adhesive particles were selected. Above all, we came to the idea that it is more important to increase the ratio of particles involved in sedimentation on the floor surface than to adhere to the wall surface, and to adhere evenly to the entire floor surface.

After injection of aerosol, the temperature of the aerosol stock solution drops due to the effect of the heat of vaporization of the propellant. The present inventors have found that this change in viscosity with temperature, that is, the viscosity ratio with temperature of the aerosol stock solution, is an important factor in determining the behavior of adherent particles involved in sedimentation, and conducted trial and error. As a result of repeating the repeated test, the present invention was completed by specifying the viscosity ratio according to the specific gravity and the temperature of the aerosol stock solution in the optimum range.

An object of the present invention is to provide a pest control aerosol which is a quantitative injection type aerosol used for space spraying and has an improved control effect on pests, and further, the pest control aerosol is used. To provide a pest control method.

The characteristic configuration of the pest control aerosol according to the present invention for solving the above problems is
An aerosol for pest control in which an aerosol stock solution containing an insecticidal component and a solvent having a vapor pressure of ^{less than 1.5 × 10 -3 mmHg at 30 ° C. and a propellant are filled in an aerosol container equipped with a fixed-quantity injection valve.} And
The aerosol stock solution has a specific gravity at 20 ° C. of 0.82 to 1.25, a viscosity η _{10 at} 10 ° C. of 3.2 to 60.0 mPa · s, and a viscosity η at ₃₀ ° C. and a viscosity at 10 ° C. the ratio η ₃₀ / η ₁₀ and η ₁₀ is 0.40 to 0.92
The fixed-quantity injection valve has an injection capacity of 0.1 to 3.0 mL at one time.

According to the pest control aerosol of this configuration, the specific gravity of the aerosol stock solution at 20 ° C., the viscosity η ₁₀ at 10 ° C., and the ratio η ₃₀ / η ₁₀ of the viscosity η _{30 at 30 ° C. and the viscosity η 10 at} 10 ° C. are as described above. Since the viscosity of the aerosol stock solution does not change abruptly due to a temperature change due to the heat of vaporization of the propellant or the like after the aerosol is injected, the spray particles rapidly settle while being appropriately diffused. As a result, the insecticidal component contained in the spray particles adheres to the entire floor surface, and can exert an excellent control effect against crawling pests such as cockroaches and bed bugs. In addition, since the injection capacity of the fixed-quantity injection valve is within the above range, the amount of insecticidal component released becomes appropriate by injecting the aerosol stock solution once to several times, and crawling of cockroaches, bed bugs, etc. It can exert a practically sufficient control effect against pests.

In the pest control aerosol according to the present invention
When the specific gravity of the aerosol stock solution at 20 ° C. is p and the ratio η ₃₀ / η ₁₀ is q, (p) and (q) ² are preferably 0.17 to 1.00.

According to the pest control aerosol of this configuration, when the specific gravity of the aerosol stock solution at 20 ° C. is p and the ratio η ₃₀ / η ₁₀ is q, (p) and (q) ² are set in the above range. Therefore, the spray particles formed by the injection of the aerosol have improved diffusivity and sedimentation property, and as a result, the insecticidal component contained in the spray particles can be uniformly adhered to the entire floor surface. Therefore, if an aerosol stock solution is prepared using the parameters represented by (p) and (q) ² as indicators, it is excellent for spaces and floor surfaces that could only be realized with smoke agents and full-volume injection type aerosols. It is possible to design an aerosol for pest control that can exert a pest control effect as a fixed-quantity injection type aerosol.

In the pest control aerosol according to the present invention
The insecticidal component preferably contains transfluthrin and / or metoflutrin.

According to the pest control aerosol of this configuration, since the insecticidal component contains transfluthrin and / or metoflutrin, it is possible to exert an excellent control effect on crawling pests such as cockroaches and bed bugs.

In the pest control aerosol according to the present invention
It is preferable to control crawling pests.

According to the pest control aerosol of this configuration, the spray particles formed by injection are excellent in diffusivity and sedimentation, so that the insecticidal component contained in the spray particles can adhere to the entire floor surface. As a result, it is possible to exert an excellent control effect against crawling pests such as cockroaches and bed bugs that roam the floor surface.

The characteristic configuration of the pest control method according to the present invention for solving the above problems is
An aerosol for pest control in which an aerosol stock solution containing an insecticidal component and a solvent having a vapor pressure of ^{less than 1.5 × 10 -3 mmHg at 30 ° C. and a propellant is filled in an aerosol container equipped with a fixed-quantity injection valve.} It is a pest control method that sprays using
The aerosol stock solution has a specific gravity at 20 ° C. of 0.82 to 1.25, a viscosity η _{10 at} 10 ° C. of 3.2 to 60.0 mPa · s, and a viscosity η at ₃₀ ° C. and a viscosity at 10 ° C. the ratio η ₃₀ / η ₁₀ and η ₁₀ is 0.40 to 0.92
The fixed-quantity injection valve has an injection capacity of 0.1 to 3.0 mL at one time.
The purpose is to inject the pest control aerosol indoors toward a space.

According to the pest control method of this configuration, the specific gravity of the aerosol stock solution at 20 ° C., the viscosity η ₁₀ at 10 ° C., and the ratio η ₃₀ / η ₁₀ of the viscosity η _{30 at 30 ° C. and the viscosity η 10 at} 10 ° C. are as described above. Because it is within the range, when the pest control aerosol is sprayed indoors toward the space, the viscosity of the aerosol stock solution does not change suddenly due to temperature changes due to the heat of vaporization of the propellant, so the spray particles diffuse appropriately. While it settles quickly. As a result, the insecticidal component contained in the spray particles adheres to the entire floor surface, and can exert an excellent control effect against crawling pests such as cockroaches and bed bugs. In addition, since the injection capacity of the fixed-quantity injection valve is within the above range, the amount of insecticidal component released becomes appropriate by injecting the aerosol stock solution once to several times, and crawling of cockroaches, bed bugs, etc. It can exert a practically sufficient control effect against pests.

Hereinafter, the pest control aerosol of the present invention and the pest control method will be described. However, the present invention is not intended to be limited to the configurations described below.

[Aerosol for pest control]
The pest control aerosol of the present invention is a fixed-quantity injection type aerosol used for controlling pests by spatial treatment, and is provided with a fixed-quantity injection valve for an aerosol stock solution containing an insecticidal component and a solvent and a propellant. It is configured as filled in an aerosol container.

<Aerosol stock solution>
In the pest control aerosol of the present invention, the viscosity η ₁₀ of the aerosol stock solution at 10 ° C. is adjusted to 3.2 to 60.0 mPa · s, preferably 4.0 to 20.0 mPa · s, more preferably. Is adjusted to 4.0 to 15.0 mPa · s. Further, the ratio η ₃₀ / η _{10 of the viscosity η 30 at} 30 ° C. and the viscosity η _{10 at} 10 ° C. of the aerosol stock solution is adjusted to 0.40 to 0.92, preferably 0.60 to 0.90. Will be done. When the viscosity η ₁₀ and the ratio η ₃₀ / η ₁₀ are within the above ranges, the viscosity of the aerosol stock solution does not change suddenly due to temperature changes, so that the pest control aerosol of the present invention is constant in the indoor treatment space. When the amount is injected, the spray particles rapidly settle while appropriately diffusing. As a result, the insecticidal component contained in the spray particles adheres to the entire floor surface, and can exert an excellent control effect against crawling pests such as cockroaches and bed bugs. When the viscosity η ₁₀ deviates from the above range, spray particles having sufficient diffusivity and sedimentation property are not formed in a state where the temperature of the aerosol stock solution is lowered due to the heat of vaporization of the propellant after injection, and as a result, There is a risk that the amount of the insecticidal component attached to the floor surface will be insufficient, or that the state of attachment of the insecticidal component will be significantly biased. If the ratio η ₃₀ / η ₁₀ is less than 0.40, the diffusion of spray particles may be insufficient, and if the ratio η ₃₀ / η ₁₀ is more than 0.92, pests such as cockroaches and bed bugs. There is a risk that a sufficient control effect cannot be obtained. _{The viscosity η 30} of the aerosol stock solution at 30 ° C. is preferably adjusted to 2.0 to 26.0 mPa · s, more preferably 2.5 to 20.0 mPa · s. It is more preferable to adjust to 0 to 15.0 mPa · s. The viscosities η ₁₀ and η ₃₀ of the aerosol stock solution can be measured with a viscometer. In this embodiment, the aerosol stock solution placed in the beaker is adjusted to 10 ° C. or 30 ° C. in a constant temperature water tank (manufactured by IWAKI), and a B-type viscometer (manufactured by Tokyo Keiki Co., Ltd., rotor Nо.1) is used at each temperature. (Measurement condition: 60 rpm, 30 seconds) was measured.

In the pest control aerosol of the present invention, the specific gravity of the aerosol stock solution at 20 ° C. is adjusted to 0.82 to 1.25, preferably 0.83 to 1.20, and more preferably 0.85 to 1. Adjusted to 0.05. The specific gravity of the aerosol stock solution can be adjusted by changing the mixing ratio of the insecticidal component and the solvent, or by adding other components. If the specific gravity of the undiluted aerosol solution at 20 ° C is in the range of 0.82 to 1.25, when a constant amount of the pest control aerosol of the present invention is sprayed in an indoor treatment space, the insecticidal component diffuses substantially uniformly over the entire floor surface. It is possible to obtain an excellent control effect against cockroaches, tokojirami and other insecticidal pests, and flying insects such as mosquitoes and flies in an indoor space. The control effect can be obtained. In this specification, in addition to the knockdown effect and the extermination effect based on the lethal effect, the repellent effect is collectively referred to as the control effect. Even if the extermination effect is low, if there is a sufficient repellent effect, there are many situations where control can be achieved in practice. In addition, if the specific gravity of the aerosol stock solution at 20 ° C. is within the above range, the adherent particles also enter gaps and shadows in the process of sedimentation. Therefore, when a pyrethroid compound is used as an insecticidal component, cockroach or the like However, the flushing effect of popping out from gaps and shadows can be fully expected. If the specific gravity of the aerosol stock solution at 20 ° C. is less than 0.82, the amount of spray particles adhering to the floor surface may be insufficient. If the specific gravity of the aerosol stock solution at 20 ° C. exceeds 1.25, the state of adhesion of the insecticidal component to the floor surface may become non-uniform.

By the way, the present inventors have studied to further improve the pest control effect of the pest control aerosol. When the specific gravity of the aerosol stock solution at 20 ° C. is p and the ratio η ₃₀ / η ₁₀ is q. If (p) and (q) ² are set in an appropriate range, it is a quantitative injection type aerosol that does not require special preparation for spatial treatment, but it is similar to a conventional smoke agent or a total amount injection type aerosol. It was found that pest control treatment for the entire space and floor surface is possible. In the pest control aerosol of the present invention, (p) and (q) ² are preferably adjusted to 0.17 to 1.00, and more preferably 0.17 to 0.69. , 0.40 to 0.69, more preferably 0.55 to 0.65. When (p) and (q) ² are in the range of 0.17 to 1.00, the spray particles formed by the injection of the aerosol are more diffusible and settled, and as a result, are contained in the spray particles. The insecticidal component adheres evenly to the entire floor surface. Therefore, the control effect against crawling pests can be further improved. As described above, the pest control aerosol of the present invention adopts a simple structure of a quantitative injection type aerosol by preparing an aerosol stock solution using the parameters represented by ^{(p) and (q) 2 as indexes.} It can be said that it is an epoch-making product that has never been seen before and can exert a very excellent pest control effect on the space and floor surface that could only be realized with smoke agents and full-injection aerosols. ..

As the insecticidal component which is one of the main components of the aerosol stock solution, an insecticidal component having a vapor pressure of ^{less than 1.5 × 10 -3} mmHg at 30 ° C. is used. Specifically, transfluthrin, metoflutrin, profluthrin, terra allethrin, flamethrin, monfluorothrin, dimefluthrin, mepafluthrin, heptafluthrin, phenothrin, cyfluthrin, permethrin, cypermethrin, cyfluthrin, bifentrin, phenpropathrin, tralomethrin, phenpropathrin, tralomethrin. Pyrethroid compounds such as fenprox, imiprothrin, allethrin, phthalthrin, prarethrin, lesmethrin, and natural pyrethrin, silicon compounds such as cyfluthrin, organic phosphorus compounds such as dichlorvos and fenitrothione, carbamate compounds such as propoxul, dinotefuran, imidacloprid , And neonicotinoid compounds such as clothianidin, fipronil, indoxacarb, and metoxadiazone. Considering stability, basal insecticidal efficacy, etc. ^{, a pyrethroid insecticidal component having a vapor pressure of 1.0 × 10 -4} mmHg or more and ^{less than 1.5 × 10 -3} mmHg at 30 ° C. is preferable, and specifically, a pyrethroid insecticidal component is preferable. Examples include transfluthrin, metoflutrin, and profluthrin. The above-mentioned insecticidal component can be used alone or in combination of two or more, and it is preferable to use one containing transfluthrin and / or metoflutrin. If optical isomers or geometric isomers based on asymmetric carbon are present in the acid component or alcohol portion of the pyrethroid compound, each of them or any mixture thereof is also included in the pest control compound.

The content of the insecticidal component in the aerosol stock solution is not particularly limited, but is preferably 8 to 80 w / v%, and more preferably 10 to 70 w / v%. If the content of the insecticidal component in the aerosol stock solution is within the above range, the specific gravity of the aerosol stock solution at 20 ° C., the viscosity η _{10 at} 10 ° C., and the viscosity η _{30 at} 30 ° C. and the viscosity η _{10 at 10 ° C. 30} / η ₁₀ can be set in an appropriate range. As a result, when the aerosol is sprayed, the spray particles are formed in a state suitable for controlling the crawling pests by spatial treatment, and an appropriate control effect can be obtained.

The aerosol stock solution contains a solvent in addition to the above-mentioned insecticidal component. As the solvent, an organic solvent capable of dissolving the above-mentioned insecticidal component and adjusting the aerosol stock solution to an appropriate specific density and ratio η ₃₀ / η _{10 is used.} Examples of such an organic solvent include lower alcohols having 2 to 3 carbon atoms such as ethanol, normal propanol and isopropanol (IPA), hydrocarbon solvents such as normal paraffin and isoparaffin, and isopropyl myristate (IPM). , And higher fatty acid esters having 16 to 20 carbon atoms such as hexyl laurate, glycol ether solvents having 3 to 10 carbon atoms, ketone solvents and the like. Among these, lower alcohols having 2 to 3 carbon atoms, hydrocarbon solvents, and higher fatty acid esters having 16 to 20 carbon atoms are preferable, lower alcohols having 2 to 3 carbon atoms are more preferable, and ethanol is even more preferable. ..

In addition to the above components, the aerosol stock solution contains fungicides, antibacterial agents, bactericides, air fresheners, deodorants, stabilizers, antistatic agents, defoamers, and synergistic agents for fungi and fungi. Agents, excipients and the like can also be added as appropriate. Examples of fungicides, antibacterial agents and fungicides include hinokithiol, 2-mercaptobenzothiazole, 2- (4-thiazolin) benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one, triphorin, 3-. Examples thereof include methyl-4-isopropylphenol and ortho-phenylphenol. As fragrances, orange oil, lemon oil, lavender oil, peppermint oil, eucalyptus oil, citronella oil, lime oil, yuzu oil, jasmine oil, cypress oil, green tea essential oil, limonene, α-pinene, linalol, geraniol, Examples include aromatic components such as phenylethyl alcohol, amylcinnamic aldehyde, cumin aldehyde, and benzyl acetate, and fragrance components containing green leaf alcohol and green leaf aldehyde called "green scent". Examples of the synergist include piperonyl butoxide, octylbicycloheptendicarboxymid and the like.

<Injector>
Examples of the propellant used in the pest control aerosol of the present invention include liquefied petroleum gas (LPG) such as propane, normal butane and isobutane, liquefied gas such as normal pentane, isopentan, dimethyl ether (DME) and hydrofluoroolefin such as HFO1234ze. , And compressed gases such as nitrogen gas, carbon dioxide gas, aerosolized nitrogen, and compressed air. The above propellant can be used alone or in a mixed state, but one containing LPG as a main component is easy to use. The propellant is preferably used after adjusting the gauge pressure (20 ° C.) to 0.1 to 0.7 MPa.

The volume ratio (a) / (a + b) of the aerosol stock solution (a) and the propellant (b) filled in the aerosol container is preferably adjusted to 0.02 to 0.5 in terms of volume ratio. It is more preferably adjusted to 05 to 0.5, and further preferably adjusted to 0.1 to 0.4. When the volume ratio (a) / (a + b) is within the above range, a sufficient amount of the insecticidal component can be uniformly diffused over the entire floor surface.

In the pest control aerosol of the present invention, the injection capacity of the metering injection valve at one time is set to 0.1 to 3.0 mL, preferably 0.2 to 1.0 mL, and more preferably 0. Set to 2 to 0.9 mL. If the range injection capacity is above the aerosol pest control by injecting several times from one released amount of insecticidal components, for example, becomes appropriate for about 0.1 ~ 50mg / m ^3, the process A practically sufficient control effect against crawling pests can be obtained in space.

The pest control aerosol of the present invention is preferably set so that the injection force is 3 to 50 gf at a distance of 5 cm from the injection port, and more preferably 5 to 40 gf. It is more preferable to set it to be 10 to 35 gf. When the jetting force is 3 to 50 gf, most of the insecticidal component quickly settles and adheres to the entire floor surface of the indoor treatment space, and a practically sufficient control effect against crawling pests can be obtained. Such injection force can be appropriately adjusted depending on the composition of the aerosol stock solution, the internal pressure of the aerosol container, the shape of the injection port, and the like. In this embodiment, the injection force of the pest control aerosol was measured with a digital force gauge (FGC-0.5, manufactured by Nidec-Shimpo Corporation).

The pest control aerosol of the present invention can be appropriately selected for the shapes of nozzles, nozzles, containers, etc., operation buttons, etc., depending on the intended use, purpose of use, and the like. For example, it can be a desktop type equipped with a button for injecting by pushing from above and a nozzle facing diagonally upward, or it can be designed for carrying a small container.

The number, shape, and size of the nozzles of the pest control aerosol of the present invention are not particularly limited. As an example, the number of nozzles may be one or two or more, but from the viewpoint of simple and low cost manufacturing, the number of nozzles is one. preferable. Further, the shape (cross-sectional shape) of the nozzle may be a circular shape, an elliptical shape, a polygonal shape, or any other irregular shape. The opening area of the injection port is preferably 0.05 ~ 8.0 mm ^2, more preferably from 0.1 ~ 4.0 mm ^2, further preferably 0.2 ~ 3.0 mm ^2. For example, when the number of nozzles is one and the shape of the nozzle is circular, the size of the nozzle (the diameter of the nozzle) is preferably 0.3 mm or more, more preferably 0.4 mm or more, and 0. It is more preferably 6 mm or more. The diameter of the nozzle is preferably 3.0 mm or less, more preferably 2.0 mm or less, and further preferably 1.8 mm or less.

The pest control aerosol nozzle of the present invention preferably has an elevation angle of 0 to 60 ° with respect to a horizontal plane. When the elevation angle of the nozzle with respect to the horizontal plane is within the above range, injection defects are unlikely to occur, and the aerosol stock solution can be stably injected. The elevation angle of the nozzle or actuator having two nozzles with respect to the horizontal plane shall be the elevation angle of the perpendicular bisector of the line segment connecting the centers of each nozzle with respect to the horizontal plane. For nozzles or actuators with three or more nozzles, the elevation angle of the nozzle with respect to the horizontal plane is defined as follows. If the nozzle or actuator has a nozzle in the center of the injection section, the elevation angle of the orthogonal line penetrating the center of the nozzle with respect to the horizontal plane. If there is no nozzle in the center of the injection part of the nozzle or actuator, the elevation angle of the orthogonal line penetrating the center of the polygonal circumscribed circle connecting the centers of each nozzle with respect to the horizontal plane.

The nozzle of the aerosol for pest control of the present invention is not particularly limited, but it is preferable to have a nozzle facing diagonally upward. The container for the pest control aerosol of the present invention is not particularly limited, and examples thereof include metals such as aluminum and tin, synthetic resins such as polyethylene terephthalate, and pressure-resistant glass. Further, the shape of the container may be an ordinary columnar can, a deformed can, or the like. When the material of the container is synthetic resin, pressure-resistant glass, or the like, it may be translucent or transparent. Further, the operation button of the pest control aerosol of the present invention is not particularly limited, but may be a push-down type button or a trigger type button.

The pest control aerosol of the present invention may be set so that the amount of the insecticidal component released into the air is 0.1 to 50 mg / m ^{3 by injecting the aerosol into the air in an indoor space.} It is preferably set to 0.5 to 50 mg / m ^3, and more preferably. When the aerosol stock solution is injected into the air of the indoor space so that the amount of the insecticidal component released is 0.1 to 50 mg / m ³ , 50% or more of the insecticidal component is in the indoor space by weight within 1 hour after the injection. It is preferable that the floor surface is set so as to diffuse and adhere to the entire floor surface. Here, "the insecticidal component" diffuses and adheres to the entire floor surface of the indoor space "means that the floor surface can exert the pest control effect by the attached insecticidal component, and the insecticidal component does not necessarily have to be present. It does not have to be physically attached to the entire floor surface. By 1 hour after injection, 50% or more of the insecticidal component by weight diffuses and adheres to the entire floor surface of the indoor space, so that the pest control aerosol of the present invention controls pests wandering on the floor surface. The effect is strong, and the knockdown or lethal effect is particularly excellent. Although the volume of the indoor space to be processed is not particularly limited, the interstitial space of less than 2.0 m ^3, narrow space of 2.0 ~ 18.8m ^3, the volume corresponding to 4.5 to 8 tatami room An indoor space of 18.8 to 33.3 m ³ (area 7.5 to 13.3 m ² , height 2.2 to 3.0 m), and a volume corresponding to a room of 8 to 16 tatami mats is 33.3 to 66. A wide ^{indoor space of .6 m 3} (area 13.3 to 26.6 m ² , height 2.2 to 3.0 m) can be mentioned, and a narrow space of ^{2.0 to 18.8 m 3 and 4.5. An indoor space with a volume of 18.8 to 33.3 m 3} (area 7.5 to 13.3 m ² , height 2.2 to 3.0 m) corresponding to a room of 8 to 8 tatami mats, or 8 to 16 tatami mats. It is preferably a large indoor space with a volume corresponding to a room of 33.3 to 66.6 ^{m 3} (area 13.3 to 26.6 m ² , height 2.2 to 3.0 m), and is preferably 4.5. It is more preferable that the volume corresponding to a room of about 8 tatami mats is 18.8 to 33.3 m ³ (area 7.5 to 13.3 m ² , height 2.2 to 3.0 m). However, even in a larger indoor space or a smaller indoor space, the amount of insecticidal component released into the air of the indoor space is 0.1 to 50 mg / m ^{3 according to the volume of the indoor space.} By appropriately setting the number of injections, the injection capacity, and the like, the same control effect can be obtained regardless of the volume of the indoor space. As for the frequency of use of the pest control aerosol of the present invention, it is preferable to apply the aerosol so that the amount of the insecticidal component released is within the above range at an appropriate time according to the frequency of occurrence of pests and the situation.

The pest control aerosol of the present invention includes bedbugs such as Wamongokiburi, Kurogokiburi, and Chabanegokiburi, Bed Bugs such as Bed Bugs (Bed Bugs) and Bed Bugs (Nettite Bed Bugs), Bedbugs such as Kusagi Kamemushi, Kuroyama Ali, Amimeari, and Tobi. Ants such as bedbugs, bed bugs, and bedbugs, spiders such as Ashidaka spider, Madarahime spider, and bedbug spider, mudders such as bedbugs and bed bugs, bedbugs, bed bugs, white ants such as bedbugs and bedbugs, and bedbugs. In addition to pests, mosquitoes such as red beetle, bed bug, nettai shimaka, and bedbug, flies such as fly flies and bed bugs, flies, butterfly flies, bedbugs, bees, moths and other flying pests, squid, bedbugs and other squids. Used to control various pests such as clothing pests such as bed bugs such as bedbugs, bedbugs and bedbugs, storage pests such as bed bugs, indoor dust mites such as dust mites, leopard mites, dust mites, tsume mites, and bedbug mites. be able to. In particular, bed bugs such as Wamon Gokiburi, Kurogokiburi, and Chabanegokiburi, Bed Bugs such as Bed Bugs (Bed Bugs), Bed Bugs (Nettite Bed Bugs), Bed Bugs, Amime Alis, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs It is effective in controlling ants such as spiders such as sea turtle spiders, and in particular, it exerts an excellent control effect on bed bugs, bedbugs, bed bugs, and bed bugs.

[Pest control method]
In the pest control method of the present invention, various pests can be controlled by performing an injection treatment using the pest control aerosol thus obtained. Specifically, the pest control aerosol is used, and the injection capacity at one time is 0.1 to 3.0 mL, preferably 0.2 to 1.0 mL, and more preferably 0.2 to 0.9 mL. By performing the injection treatment toward the air in the indoor space, the amount of the control component released into the air is set to be 0.1 to 50 mg / m ³ , preferably 0.5 to 50 mg / m ^3. There is. Although the volume of the indoor space to be processed is not particularly limited, the interstitial space of less than 2.0 m ^3, narrow space of 2.0 ~ 18.8m ^3, the volume corresponding to 4.5 to 8 tatami room An indoor space of 18.8 to 33.3 m ³ (area 7.5 to 13.3 m ² , height 2.2 to 3.0 m), and a volume corresponding to a room of 8 to 16 tatami mats is 33.3 to 66. A wide ^{indoor space of .6 m 3} (area 13.3 to 26.6 m ² , height 2.2 to 3.0 m) can be mentioned, and a narrow space of ^{2.0 to 18.8 m 3 and 4.5. An indoor space with a volume of 18.8 to 33.3 m 3} (area 7.5 to 13.3 m ² , height 2.2 to 3.0 m) corresponding to a room of 8 to 8 tatami mats, or 8 to 16 tatami mats. It is preferably a large indoor space with a volume corresponding to a room of 33.3 to 66.6 ^{m 3} (area 13.3 to 26.6 m ² , height 2.2 to 3.0 m), and is preferably 4.5. It is more preferable that the volume corresponding to a room of about 8 tatami mats is 18.8 to 33.3 m ³ (area 7.5 to 13.3 m ² , height 2.2 to 3.0 m). For example, injection processing in an indoor space with ^{a volume of 18.8 to 33.3 m 3} (area 7.5 to 13.3 m ² , height 2.2 to 3.0 m) corresponding to a room of 4.5 to 8 tatami mats. By injecting the aerosol stock solution once or multiple times, the amount of the control component released into the air becomes 0.1 to 50 mg / m ³ . However, even in a larger indoor space or a smaller indoor space, the amount of insecticidal component released into the air of the indoor space is 0.1 to 50 mg / m ^{3 according to the volume of the indoor space.} By appropriately setting the number of injections, the injection capacity, and the like, the same control effect can be obtained regardless of the volume of the indoor space. As for the frequency of implementation of the pest control method of the present invention, it is preferable to apply the pest control method so that the amount of the insecticidal component released is within the above range at an appropriate time according to the frequency of occurrence of pests and the situation.

In the pest control method of the present invention, it is preferable to inject the aerosol so that the injection direction angle is 0 to 60 ° with respect to the horizontal plane, and more preferably 30 to 60 °. When the injection direction angle of the aerosol is in the above range, the diffusion uniformity is excellent.

In order to verify the effect of the pest control aerosol of the present invention, pest control aerosols (Examples 1 to 18) having the characteristic configuration of the present invention were prepared, and as described in Test Example 1, (1) Cockroach. Tests were conducted to evaluate the extermination effect on species, (2) the extermination effect on bed bugs, and (3) the floor adhesion rate and diffusion uniformity of insecticidal components. Further, for comparison, pest control aerosols (Comparative Examples 1 to 3) not provided with the characteristic composition of the present invention were prepared and the same test was conducted. Further, the pest control aerosol (Examples 1 and 9) having the characteristic configuration of the present invention and the pest control aerosol (Comparative Example 3) not having the characteristic configuration of the present invention are used and described in Test Example 2. As described above, (1) a test was conducted to evaluate the extermination effect on other pests. The specific densities (20 ° C.) of the insecticidal component and the solvent used in Examples and Comparative Examples are shown below. However, the present invention is not limited to these examples.
・ Transfluthrin 1.51
・ Metofluthrin 1.28
・ Proflutrin 1.28
・ Phenothrin 1.06
・ Permethrin 1.20
・ Empenthrin 0.93
・ Ethanol 0.79
・ Isopropanol 0.79
・ Neothiosol 0.76
-Isopropyl myristate 0.86
・ Phenyl glycol 1.11

[Example 1]
Transfluthrin (40 w / v%), which is an insecticidal component, was dissolved in ethanol, which is a solvent, to prepare an aerosol stock solution. This aerosol stock solution has a specific gravity of 0.98 at 20 ° C., a viscosity η ₁₀ at 10 ° C. of 5.0 mPa · s, a viscosity η ₃₀ at 30 ° C. of 4.0 mPa · s, and a ratio of η. ₃₀ / η ₁₀ was 0.80, and the product (p) · (q) ² of the specific gravity (p) at 20 ° C. _{and the square of the ratio η 30} / η ₁₀ (q) was 0.63. The volume ratio (a) / (a + b) of the aerosol stock solution (a) and the liquefied petroleum gas (b) as the propellant is the volume ratio of the aerosol container (pressure resistant container) with a fixed-quantity injection valve having an injection capacity of 0.4 mL. 9 mL of the aerosol stock solution (a) and 21 mL of the liquefied petroleum gas (b) were pressure-filled so as to obtain 0.3, to obtain the aerosol for pest control of Example 1. The pest control aerosol had an injection force of 15 gf at an injection distance of 5 cm.

[Examples 2 to 18, Comparative Examples 1 to 3]
The pest control aerosols of Examples 2 to 18 shown in Table 1 were prepared according to the procedure according to Example 1. For comparison, the pest control aerosols of Comparative Examples 1 to 3 were prepared. In the pest control aerosols of Examples 2, 12 to 14, and 16, an aerosol container with a fixed-quantity injection valve having a single injection capacity of 1.0 mL was used, and Examples 3 to 6, 8 to 11 were used. , 15, 17, and 18, and in the aerosols for pest control of Comparative Examples 1 to 3, an aerosol container with a fixed-quantity injection valve having a single injection capacity of 0.4 mL was used for pest control of Example 7. For the aerosol, an aerosol container with a fixed-quantity injection valve having a single injection capacity of 0.2 mL was used.

 

<Test Example 1>
(1) Extermination effect on cockroaches A total of 8 20 x 20 cm glass plates (for German cockroaches and American cockroaches) are installed at the four corners of a ^{closed room with a volume of 25 m 3} (equivalent to a 6 tatami room, area 10 m ^2). Then, place a plastic ring with a diameter of about 20 cm coated with Vaseline on each glass plate to prevent escape, and place the specified test insects (German cockroach: 5 adults, American cockroach: 5 larvae) in each ring. I let it roam freely. In Examples 1, 3 to 6, 8 to 11, 17, and 18, and Comparative Examples 1 to 3, at the center of the room (height 1.5 m above the floor), 0.4 mL of the test aerosol was slightly obliquely applied. Four shots were sprayed while changing the direction upward. In Examples 2, 13 and 16, 1.0 mL of the test aerosol was sprayed slightly diagonally upward by one shot toward the center of the room (height 1.5 m above the floor). In Example 7, at the center of the room (at a height of 1.5 m above the floor), 0.2 mL of the test aerosol was sprayed in 6 shots while changing the direction slightly diagonally upward. In Examples 12 and 14, 1.0 mL of the test aerosol was sprayed at the center of the room (at a height of 1.5 m above the floor) for 4 shots while changing the direction slightly diagonally upward. In Example 15, at the center of the room (at a height of 1.5 m above the floor), 0.4 mL of the test aerosol was sprayed in 6 shots while changing the direction slightly diagonally upward. The test insects were exposed to the drug after being left for 30 minutes after spraying, and during that time, the test insects that turned upside down over time were counted, and the KT ₅₀ value was determined. Further, 30 minutes after the spraying, the glass plate was transferred to a separate room together with the ring containing the test insects and fed, and the mortality rate of the test insects was determined 24 hours later. In Table 2 described later, the KT ₅₀ value of the German cockroach is "A" when it is 8.0 minutes or less, "B" when it is 8.1 to 12.0 minutes, and 12.1 to 30.0 minutes. When it is, it is indicated by "C", and when it is estimated to be 30.1 minutes or more, it is indicated by "D". The KT ₅₀ value of the American cockroach is "A" when it is 11.0 minutes or less, "B" when it is 11.1 to 18.0 minutes, and "C" when it is 18.1 to 30.0 minutes. ", The time when it is estimated to be 30.1 minutes or more is indicated by" D ". The case fatality rates of the German cockroach and the American cockroach are "A" when they are 90 to 100%, "B" when they are 75 to 85%, "C" when they are 50 to 70%, and less than 50%. The time is indicated by "D".

(2) Extermination effect on bed bugs A total of four 20 x 20 cm glass plates ^{are installed at the four corners of a room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring with a diameter of about 10 cm coated with vaseline was placed in each ring to prevent escape, and a predetermined test insect (bed bugs: 5) was released into each ring to wander freely. In Examples 1, 3 to 6, 8 to 11, 17, and 18, and Comparative Examples 1 to 3, at the center of the room (height 1.5 m above the floor), 0.4 mL of the test aerosol was slightly obliquely applied. Four shots were sprayed while changing the direction upward. In Examples 2, 13 and 16, 1.0 mL of the test aerosol was sprayed slightly diagonally upward by one shot toward the center of the room (height 1.5 m above the floor). In Example 7, at the center of the room (at a height of 1.5 m above the floor), 0.2 mL of the test aerosol was sprayed in 6 shots while changing the direction slightly diagonally upward. In Examples 12 and 14, 1.0 mL of the test aerosol was sprayed at the center of the room (at a height of 1.5 m above the floor) for 4 shots while changing the direction slightly diagonally upward. In Example 15, at the center of the room (at a height of 1.5 m above the floor), 0.4 mL of the test aerosol was sprayed in 6 shots while changing the direction slightly diagonally upward. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, and the mortality rate of the test insects was determined 24 hours later. In Table 2 below, the mortality rate of bed bugs is "A" when it is 90 to 100%, "B" when it is 75 to 85%, "C" when it is 50 to 70%, and 50%. When it is less than, it is indicated by "D".

(3) Floor adhesion rate and diffusion uniformity of insecticidal components 20 x 20 cm glass plates were installed at 6 to 8 locations on the floor ^{of a room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ^2). .. In Examples 1, 3 to 6, 8 to 11, 17, and 18, and Comparative Examples 1 to 3, at the center of the room (height 1.5 m above the floor), 0.4 mL of the test aerosol was slightly obliquely applied. Four shots were sprayed while changing the direction upward. In Examples 2, 13 and 16, 1.0 mL of the test aerosol was sprayed slightly diagonally upward by one shot toward the center of the room (height 1.5 m above the floor). In Example 7, at the center of the room (at a height of 1.5 m above the floor), 0.2 mL of the test aerosol was sprayed in 6 shots while changing the direction slightly diagonally upward. In Examples 12 and 14, 1.0 mL of the test aerosol was sprayed at the center of the room (at a height of 1.5 m above the floor) for 4 shots while changing the direction slightly diagonally upward. In Example 15, at the center of the room (at a height of 1.5 m above the floor), 0.4 mL of the test aerosol was sprayed in 6 shots while changing the direction slightly diagonally upward. One hour after the spraying, all the glass plates were taken out, and the attached insecticidal components were washed out with acetone and quantitatively analyzed by gas chromatography. Based on the obtained analytical values, the floor was charged by 1 hour after the injection treatment with respect to the theoretical total amount of the insecticidal component injected (this corresponds to the amount of the insecticidal component released multiplied by the volume in Table 1). The ratio (floor surface adhesion rate) of the amount of insecticidal components settled and adhered to the surface (calculated by the total amount of insecticidal components attached to the glass plate x (room area) / (total area of the glass plate)) was determined. In addition, for the attached insecticidal component, the variation between each glass plate was analyzed, and the uniformity of diffusion was evaluated. The results are indicated by "A", "B", "C", and "D" in order from the one with the best diffusion uniformity.

The test results are shown in Table 2.

As a result of the test, the pest control aerosols of Examples 1 to 18 using the insecticidal component having a ^{vapor pressure of less than 1.5 × 10 -3 mmHg at 30 ° C. were used for both cockroaches and bed bugs.} It was confirmed that a high lethal effect with a lethal rate of 80% or more and _{a high knockdown effect with a KT 50} value of 8.3 minutes or less for German cockroaches and 18.0 minutes or less for American cockroaches were achieved. rice field. Among them, Examples 1 to 8, 11, 12, 14, 15 using pyrethroid insecticidal components having a vapor pressure of 1.0 × 10 ^-4 mmHg or more and ^{less than 1.5 × 10 -3 mmHg at 30 ° C.} , 17, and 18 pest control aerosols _{were confirmed to have a high knockdown effect with a KT 50} value of 8.0 minutes or less for the German cockroach and 12.0 minutes or less for the American cockroach. .. In particular, the pest control aerosols of Examples 1-7, 11, 12, 14, 15, 17, and 18 using transfluthrin or metoflutrin have both an excellent lethal effect on cockroaches and an excellent knockdown effect. It turned out to be a thing. Further, as a result of the test, in the pest control aerosols of Examples 1 to 18, not only the floor surface adhesion rate of the insecticidal component became 50% or more 1 hour after the spray treatment, but also the insecticidal component was omitted on the entire floor surface. It was confirmed that they were evenly diffused and adhered. In the pest control aerosols of Examples 1 to 18, the specific gravity of the aerosol stock solution at 20 ° C. and the ratio η ₃₀ / η _{10 of the viscosity η 30 at} 30 ° C. and the viscosity η _{10 at} 10 ° C. are appropriately adjusted. Therefore, it is considered that the insecticidal component uniformly diffuses and adheres to the entire floor surface, and as a result, the insecticidal component efficiently contacts the aerosol pest at any position on the floor surface.

On the other hand, in the pest control aerosol of Comparative Example 1, since the ratio of the aerosol stock solution η ₃₀ /η ₁₀ is small, the state of adhesion of the insecticidal component to the floor surface becomes uneven, and it is suitable for both cockroaches and bed bugs. However, sufficient lethal effect and knockdown effect could not be obtained. The pest control aerosol of Comparative Example 2 _{has a large ratio of aerosol stock solution η 30} / η _{10 and a} small specific gravity at 20 ° C. The adhered state of the insecticidal component became non-uniform, and the lethal effect and knockdown effect on both cockroaches and bed bugs became extremely low. In the pest control aerosol of Comparative Example 3, the specific gravity of the aerosol stock solution at 20 ° C and the ratio η ₃₀ / η ₁₀ are appropriately adjusted, but the vapor pressure of the insecticidal component empentrin at 30 ° C is 1.5 ×. Since ^{it is 10 -3} mmHg or more, the amount of the insecticidal component adhered to the floor surface is insufficient, and the state of the insecticidal component adhered to the floor surface becomes uneven, so that a sufficient lethal effect and a knockdown effect can be obtained. It is probable that it was not done.

<Test Example 2>
Extermination effect against other pests Four corners of ^{a room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ) with a total of 12 20 x 20 cm glass plates (for Nihonhimea japonica, Formica japonica, and Smokybrown cockroach) closed. Place a plastic ring with a diameter of about 20 cm on each glass plate, and release the specified test insects (Nihonhimea japonica: 1 animal, Formica japonica: 5 animals, Smokybrown cockroach: 5 ♀ adults) in each ring. I made him wander freely. 4 shots of the pest control aerosols of Examples 1, 9 and Comparative Example 3 in the center of the room (1.5 m above the floor), 0.4 mL each of the test aerosols, slightly diagonally upward. Sprayed. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, fed, and the mortality rate of the test insects was determined 24 hours later. ..

The test results are shown in Table 3.

As a result of the test, the pest control aerosols of Examples 1 and 9 showed excellent lethal effects on Tangle web spider, Formica japonica, and Smokybrown cockroach. On the other hand, the pest control aerosol of Comparative Example 3 did not have a sufficient lethal effect on any of the spider, Formica japonica, and Smokybrown cockroach.

<Test Example 3>
Extermination effect on spiders A total of four 20 x 20 cm glass plates (for Tangle web spiders) are ^{installed at the four corners of a closed room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring having a diameter of about 20 cm was placed in each ring, and a predetermined test insect (Tangle web spider: 1 animal) was released into each ring to wander freely. The pest control aerosol of Example 18 was sprayed at the center of the room (at a height of 1.5 m above the floor) by 0.4 mL each of 0.4 mL of the test aerosol while changing the direction slightly diagonally upward for 4 shots. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, fed, and the mortality rate of the test insects was determined 24 hours later. However, the case fatality rate was 100%.

<Test Example 4>
Extermination effect against ants A total of 4 20 x 20 cm glass plates (for Formica japonica) are ^{installed at the 4 corners of a closed room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring having a diameter of about 20 cm was placed in each ring, and a predetermined test insect (Formica japonica: 5 animals) was released into each ring to wander freely. The pest control aerosol of Example 18 was sprayed at the center of the room (at a height of 1.5 m above the floor) by 0.4 mL each of 0.4 mL of the test aerosol while changing the direction slightly diagonally upward for 4 shots. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, fed, and the mortality rate of the test insects was determined 24 hours later. However, the case fatality rate was 100%.

<Test Example 5>
Extermination effect on centipedes A total of 4 20 x 20 cm glass plates (for centipedes) are ^{installed at the 4 corners of a closed room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring having a diameter of about 20 cm was placed in each ring, and a predetermined test insect (centipede: 1 animal) was released into each ring to wander freely. The pest control aerosol of Example 18 was sprayed at the center of the room (at a height of 1.5 m above the floor) by 0.4 mL each of 0.4 mL of the test aerosol while changing the direction slightly diagonally upward for 4 shots. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, and 24 hours later, the mortality rate of the test insects was calculated. Was 100%.

<Test Example 6>
Extermination effect against gejigeji A total of 4 20 x 20 cm glass plates (for gejigeji) are ^{installed in the four corners of a closed room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring having a diameter of about 20 cm was placed in each ring, and a predetermined test insect (gejigeji: 1) was released into each ring to wander freely. The pest control aerosol of Example 18 was sprayed at the center of the room (at a height of 1.5 m above the floor) by 0.4 mL each of 0.4 mL of the test aerosol while changing the direction slightly diagonally upward for 4 shots. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, and 24 hours later, the mortality rate of the test insects was calculated. Was 100%.

<Test Example 7>
Extermination effect on stink bugs A total of 4 20 x 20 cm glass plates (for stink bugs) are ^{installed in the four corners of a closed room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring having a diameter of about 20 cm was placed in each ring, and a predetermined test insect (stink bug: 1 animal) was released into each ring to allow it to roam freely. The pest control aerosol of Example 18 was sprayed at the center of the room (at a height of 1.5 m above the floor) by 0.4 mL each of 0.4 mL of the test aerosol while changing the direction slightly diagonally upward for 4 shots. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, and 24 hours later, the mortality rate of the test insects was calculated. Was 100%.

<Test Example 8>
Extermination effect on the woodlouse A total of four 20 x 20 cm glass plates (for the woodlouse) are ^{installed in the four corners of a closed room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring having a diameter of about 20 cm was placed in each ring, and a predetermined test insect (woodlouse: 1 animal) was released into each ring to wander freely. The pest control aerosol of Example 18 was sprayed at the center of the room (at a height of 1.5 m above the floor) by 0.4 mL each of 0.4 mL of the test aerosol while changing the direction slightly diagonally upward for 4 shots. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, and 24 hours later, the mortality rate of the test insects was calculated. Was 100%.

<Test Example 9>
Extermination effect on pill bugs A total of 4 20 x 20 cm glass plates (for pill bugs) are ^{installed at the four corners of a closed room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring having a diameter of about 20 cm was placed in each ring, and a predetermined test insect (pill bug: 3 animals) was released into each ring to wander freely. The pest control aerosol of Example 18 was sprayed at the center of the room (at a height of 1.5 m above the floor) by 0.4 mL each of 0.4 mL of the test aerosol while changing the direction slightly diagonally upward for 4 shots. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, and 24 hours later, the mortality rate of the test insects was calculated. Was 83%.

<Test Example 10>
Extermination effect on booklices A total of four 20 x 20 cm glass plates (for booklices) are ^{installed in the four corners of a closed room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring having a diameter of about 20 cm was placed in each ring, and a predetermined test insect (Psocoptera: 3) was released into each ring to wander freely. The pest control aerosol of Example 18 was sprayed at the center of the room (at a height of 1.5 m above the floor) by 0.4 mL each of 0.4 mL of the test aerosol while changing the direction slightly diagonally upward for 4 shots. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, and 24 hours later, the mortality rate of the test insects was calculated. Was 100%.

<Test Example 11>
Extermination effect on Anobiidae A total of 4 20 x 20 cm glass plates (for Anobiidae) are ^{installed at the four corners of a closed room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring having a diameter of about 20 cm was placed in each ring, and a predetermined test insect (Anobiidae: 3 animals) was released into each ring to wander freely. The pest control aerosol of Example 18 was sprayed at the center of the room (at a height of 1.5 m above the floor) by 0.4 mL each of 0.4 mL of the test aerosol while changing the direction slightly diagonally upward for 4 shots. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, and 24 hours later, the mortality rate of the test insects was calculated. Was 92%.

<Test Example 12>
Extermination effect on maize weevil A total of 4 20 x 20 cm glass plates (for maize weevil) are ^{installed in the four corners of a closed room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring having a diameter of about 20 cm was placed in each ring, and a predetermined test insect (maize weevil: 1 animal) was released into each ring to allow it to roam freely. The pest control aerosol of Example 18 was sprayed at the center of the room (at a height of 1.5 m above the floor) by 0.4 mL each of 0.4 mL of the test aerosol while changing the direction slightly diagonally upward for 4 shots. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, and 24 hours later, the mortality rate of the test insects was calculated. Was 100%.

<Test Example 13>
Extermination effect on skin beetles A total of 4 20 x 20 cm glass plates (for skin beetles) are ^{installed in the four corners of a closed room with a volume of 25 m 3} (equivalent to a room of 6 tatami mats, area 10 m ² ), and on each glass plate. A plastic ring having a diameter of about 20 cm was placed in each ring, and a predetermined test insect (skin beetle: 3) was released into each ring to wander freely. The pest control aerosol of Example 18 was sprayed at the center of the room (at a height of 1.5 m above the floor) by 0.4 mL each of 0.4 mL of the test aerosol while changing the direction slightly diagonally upward for 4 shots. After leaving the test insects exposed to the drug for 30 minutes after spraying, the glass plate was moved to a separate room together with the ring containing the test insects, and 24 hours later, the mortality rate of the test insects was calculated. Was 83%.

<Test Example 14>
Changing the disinfection effect volume 25 m ³ room for gas, at the center of the aerosol pest control in Example 18 room (height above the floor 1.5 m), the test aerosol by 0.4 mL, slightly direction obliquely upward While spraying 4 shots. Immediately after releasing 4 moths and exposing them to the drug for 2 hours, all test insects were collected. When the mortality rate of the test insects was determined 24 hours later, the mortality rate was 100%.

<Test Example 15>
Changing the disinfection effect volume 25 m ³ room for mosquitoes, with the center of the aerosol pest control in Example 1 room (height above the floor 1.5 m), the test aerosol by 0.4 mL, slightly direction obliquely upward While spraying 4 shots. Imago male Culex pipiens were immediately released and exposed to the drug for 2 hours, and then the test insects were collected. When the mortality rate of the test insects was determined 24 hours later, the mortality rate was 100%.

The pest control aerosol and the pest control method of the present invention can be used for the purpose of controlling indoor pests, especially cockroaches, bed bugs and other pests.

Claims (5)

1. An aerosol for pest control in which an aerosol stock solution containing an insecticidal component and a solvent having a vapor pressure of ^{less than 1.5 × 10 -3 mmHg at 30 ° C. and a propellant are filled in an aerosol container equipped with a fixed-quantity injection valve.} And
   The aerosol stock solution has a specific gravity at 20 ° C. of 0.82 to 1.25, a viscosity η _{10 at} 10 ° C. of 3.2 to 60.0 mPa · s, and a viscosity η at ₃₀ ° C. and a viscosity at 10 ° C. the ratio η ₃₀ / η ₁₀ and η ₁₀ is 0.40 to 0.92
   The fixed-quantity injection valve is an aerosol for pest control having an injection capacity of 0.1 to 3.0 mL at one time.
2. The pest according to claim 1, wherein (p) and (q) ² are 0.17 to 1.00 when the specific gravity of the aerosol stock solution at 20 ° C. is p and the ratio η ₃₀ / η _{10 is q.} Aerosol for control.
3. The pest control aerosol according to claim 1 or 2, wherein the insecticidal component contains transfluthrin and / or metoflutrin.
4. The aerosol for pest control according to any one of claims 1 to 3, which targets crawling pests.
5. An aerosol for pest control in which an aerosol stock solution containing an insecticidal component and a solvent having a vapor pressure of ^{less than 1.5 × 10 -3 mmHg at 30 ° C. and a propellant is filled in an aerosol container equipped with a fixed-quantity injection valve.} It is a pest control method that sprays using
   The aerosol stock solution has a specific gravity at 20 ° C. of 0.82 to 1.25, a viscosity η _{10 at} 10 ° C. of 3.2 to 60.0 mPa · s, and a viscosity η at ₃₀ ° C. and a viscosity at 10 ° C. the ratio η ₃₀ / η ₁₀ and η ₁₀ is 0.40 to 0.92
   The fixed-quantity injection valve has an injection capacity of 0.1 to 3.0 mL at one time.
   A pest control method in which the pest control aerosol is sprayed indoors toward a space.