JP6718568B1 - Pest and mite control method, and pest and mite control aerosol - Google Patents

Abstract

Provided is a pest control method and a mite control method, which are capable of maintaining the control effect against crawling pests and indoor dust mites for several days just by pushing one pest and mite control aerosol in an indoor space. For controlling pests and mites, an aerosol stock solution containing a control component and an organic solvent, and a propellant are filled in an aerosol container equipped with a constant-quantity injection valve having an injection volume of 1.0 to 5.0 mL per injection. A method for controlling pests and mites, which is sprayed using an aerosol, wherein the control component is a fugitive compound having a vapor pressure at 30° C. of less than 1×10 −4 mmHg, and the specific gravity of the aerosol stock solution is 0.85. ˜1.15, and the spray force of the pest and mite control aerosol is 10 to 50 gf at a spray distance of 5 cm.

Description

The present invention is a pest obtained by filling an aerosol stock solution containing a control component and an organic solvent, and a propellant into an aerosol container equipped with a metered injection valve having an injection volume of 1.0 to 5.0 mL per injection. The present invention relates to a pest to be spray-treated with a tick control aerosol, a method for controlling ticks, and a pest and a tick control aerosol.

Targeting crawling pests such as cockroaches and indoor dust mites wandering around floors and walls, as a type of insecticide applied to places and passages where crawling pests and mites live, (1) smoking agents, Typical examples are (2) all-injection-type aerosol, (3) coating-type aerosol, and (4) bait agent, each of which has features in terms of formulation.

(1) Smoke agents and (2) Full-volume injection type aerosols disperse the drug all over the room at once, and seal the room for a predetermined time to increase the drug concentration, during which people cannot enter the room. It falls into the category. Once applied, these preparations have a long-lasting effect of exterminating crawling pests and indoor dust mites for 2 to 4 weeks, but require time-consuming pre-use procedures and special attention must be paid to the safety of the drug. Therefore, it is hard to say that the dosage form is easily and frequently adopted.

On the other hand, locally applied surface treatment (3) application type aerosol and point treatment (4) bait agent are quasi-drugs that have a mild effect on the human body, and (1) smoke agent and (2) Although it is easier to use than a total injection aerosol, it is not a space treatment, so the contact efficiency between the drug and pests and mites is poor, and it is not always possible to provide an efficient extermination method.

As described above, conventionally, it has been considered difficult to develop a control agent for crawling pests and indoor dust mites that is a quasi drug even though it is a spatial treatment.

By the way, Patent Document 1 is a method for exterminating crawling pests by evaporating an insecticidal solution containing an insecticidal component and a solvent into a space such as an indoor space or a storage space, using a compound having a specific structure as a solvent, Disclosed is a method for exterminating crawling pests by causing a piezo sprayer to evaporate the insecticidal liquid little by little over time so that the insecticidal liquid fine particles having a small particle diameter continue to float in the space. The method of Patent Document 1 proposes to discontinue a cockroach by continuously ejecting a small amount of a drug into a space for a long time like a liquid electric mosquito repellent, but it is several tens of times that of a mosquito. As the target of the drug-resistant cockroaches, the use of a powerful insecticidal component is unavoidable, and there is an unavoidable safety concern for the human body.

The present inventors have previously developed a space treatment agent, which is a quasi-drug non-medicinal pest control insect and indoor dust mites control agent, in developing (1) smoke agent and (2) total amount Rather than a formulation that is used once every 2 to 4 weeks like a spray type aerosol, once a fixed amount spray treatment, the control effect lasts for several days under practical conditions, that is, basically 1 to 2 days. As a formulation to be used once, a thorough study was conducted aiming at a highly safe formulation that can be used even in the presence of people. As a result, they have invented a very useful “pest and mite control method” (see Patent Document 2), which is effective not only for crawling pests and indoor dust mites but also for flying pests on the day of spraying. In addition, in order to realize a practical extermination effect against flying pests, the present invention has a spraying property of the aerosol that the sprayed particles after spraying are buoyant particles, and adhere to a wall surface and settle to a floor surface. It was designed so that 30 to 80% of all the spray particles adhere to the wall surface or the like by 1 hour after the injection treatment or settle on the floor surface while being formed with the adhesive particles involved. .. In addition, at the time of the invention of Patent Document 2, the injection volume of the constant-quantity injection valve was generally 0.2 to 0.4 mL, and the formulation was basically pushed several times (pressing the injection button) in one treatment. Was done.

On the other hand, Patent Document 3 discloses an aerosol product for exterminating crawling pests and a method for exterminating crawling pests, which uses a metered injection valve. This aerosol product increases the mixing ratio of the propellant contained in the aerosol container, lowers the vapor pressure of the solvent that dissolves the active ingredient, and increases the evaporation rate of the solvent that forms the particles injected from the aerosol container. It is characterized in that the particles are scattered to the depths of the indoor gap by slowing down. That is, the method of Patent Document 3 corresponds to (3) a local treatment by a coating type aerosol even if it is a quantitative injection treatment, and does not correspond to a spatial treatment. Therefore, even if a high extermination effect is locally obtained in a part of the gap, it is not possible to exterminate the crawling pest efficiently in the entire indoor area.

JP, 2009-143868, A Japanese Patent No. 5517122 JP, 2018-12676, A

In view of such a situation, the present inventors have improved the convenience of the insect pests and mite control method based on the recognition that the spatial quantitative injection treatment based on Patent Document 2 is the most efficient pest and mite control method, and in particular, crawling pests. The study was conducted with the aim of further improving the efficacy against indoor dust mites. First, a metered-quantity injection valve with an injection capacity of 1.0 to 5.0 mL, which has been developed in recent years, was adopted to make it possible to inject the necessary amount of the effective component with one push. On top of that, in the space treatment, in order to improve the control effect against cockroaches among the crawling pests, in order to improve the control effect, the sprayed particles after spraying, floating particles floating in the processing space, and adhesion that adheres to the exposed part in the processing space. It is not enough to form the adhesive particles as the adhesive particles, and the adhesive particles are more predominant as compared with the jetting characteristics of Patent Document 2. Further, among the adhesive particles, the adhesive particles are attached to the floor surface rather than to the wall surface. It was concluded that it is essential to increase the ratio of adherent particles involved in the sedimentation of. Then, the present inventors have found that the specific gravity of the aerosol stock solution and the jetting force of the aerosol are important factors that determine the behavior of the adhesive particles involved in sedimentation, and the results of repeated trial and error tests The present invention has been completed by specifying the optimum range for the specific gravity of the aerosol stock solution and the ejection force of the aerosol.

The object of the present invention is to control pests and mite pests and indoor dust mites with a single push of an aerosol for controlling pests and mites, which is equipped with a quantitative injection valve having a volume of 1.0 to 5.0 mL. It is intended to provide a method for controlling pests and mites that can be maintained for a day, and an aerosol for controlling pests and mites.

The present invention has found that the following configurations have excellent effects for achieving the above object.
[1] An insect pest prepared by filling an aerosol stock solution containing a control component and an organic solvent, and a propellant into an aerosol container equipped with a metered injection valve having an injection volume of 1.0 to 5.0 mL per time, A pest to be spray-treated with a mite control aerosol, a mite control method,
The control component is a fugitive compound having a vapor pressure at 30° C. of less than 1×10 ⁻⁴ mmHg,
The specific gravity of the aerosol stock solution is 0.85 to 1.15,
The spray force of the pest and tick control aerosol is 10 to 50 gf at a spray distance of 5 cm,
In the injection process, the aerosol undiluted solution is injected into the air of the indoor space so that the release amount of the control component is 0.1 to 50 mg/m ^3, and 60% of the control component is injected one hour after the injection. A method for controlling pests and ticks, wherein the above is diffused and attached to the entire floor surface of the indoor space.
[2] The pest and mite control aerosol has a filling amount of the aerosol stock solution of a, a filling amount of the propellant of b, a specific gravity of the aerosol stock solution of S, and a spraying force of the pest and mite control aerosol of F. Then, the following equation (1):
δ=[a/(a+b)]×S ² ×F (1)
The method for controlling pests and mites according to [1], wherein δ defined in 1. is in the range of 1.0 to 30.
[3] The aerosol for controlling pests and mites has the following formula (2):
0.1 ≤ [a/(a+b)] ≤ 0.5 (2)
The method for controlling pests and mites according to [2], which is configured to satisfy the above.
[4] The pest and mite control aerosol has the following formula (3):
3.0 ≤ δ ≤ 15 (3)
The method for controlling pests and mites according to [2] or [3], which is configured to satisfy the above.
[5] The sparingly volatile compound is at least one crawling insect pest control selected from the group consisting of phenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropatrine, tralomethrin, etofenprox, and dinotefuran. The method for controlling pests and mites according to any one of [1] to [4], which is a compound for use.
[6] The refractory compound is amidoflumet, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dibutyl phthalate, and p-menthane-3,8. -The method for controlling pests and mites according to any one of [1] to [4], which is at least one tick controlling compound selected from the group consisting of diols.
[7] The method for controlling pests and mites according to any one of [1] to [6], wherein the organic solvent is a lower alcohol having 2 to 3 carbon atoms.
[8] The method for controlling pests and ticks according to any one of [1] to [7], wherein the floor area of the indoor space is 7.5 to 26.6 m ² .
[9] An insect pest prepared by filling an aerosol stock solution containing a control component and an organic solvent, and a propellant into an aerosol container equipped with a metered injection valve having an injection volume of 1.0 to 5.0 mL per time, An aerosol for controlling ticks,
The control component is a fugitive compound having a vapor pressure at 30° C. of less than 1×10 ⁻⁴ mmHg,
The specific gravity of the aerosol stock solution is 0.85 to 1.15,
The spray force of the pest and tick control aerosol is 10 to 50 gf at a spray distance of 5 cm,
When the aerosol undiluted solution is injected into the air of the indoor space by a single injection process through the quantitative injection valve so that the release amount of the control component is 0.1 to 50 mg/m ³ , 1 from the injection An aerosol for controlling pests and mites, in which 60% or more of the control component diffuses and adheres to the entire floor surface of the indoor space by the time.

According to the pest of the present invention, a method for controlling ticks, and pests, according to the tick control aerosol, a specific pest containing a hardly volatile compound, a tick control aerosol is just one push in the indoor space and the injection treatment, the treatment Especially in the area, the control effect against the crawling pests and indoor dust mites can be maintained for several days. It is extremely practical because it provides a convenient and effective method for controlling pests and mites, and an aerosol for controlling pests and mites.

In the present invention, a fugitive compound having a vapor pressure at 30° C. of less than 1×10 ⁻⁴ mmHg is used as a control component. Such a controlling component is the insect pest of the present invention, after the spray treatment of one-push aerosol for controlling ticks in the indoor space, mainly settling on the floor as adherent particles, especially in the indoor space crawling pests and indoor dust mites It shows an excellent control effect against. In addition, in the present invention, in addition to the extermination effect based on the knockdown effect and the lethal effect, the repellent effect is collectively referred to as a control effect. Even if the extermination effect is low, if there is a sufficient repellent effect, there are many cases where the control can be achieved in practice.

That is, the present invention is based on the recognition that the spatial quantitative injection treatment based on Patent Document 2 is the most efficient pest and mite control method, and improves the convenience thereof, and in particular, crawling pests and indoor dust mites. This is aimed at further improving the efficacy against various kinds. First, a metered-quantity injection valve with a capacity of 1.0 to 5.0 mL, which has been developed in recent years, was adopted, and it was possible to inject the necessary amount of effective component with one push. On top of that, in space treatment, in order to improve the control effect especially against cockroaches among the crawling pests, in order to increase the predominance of adherent particles among floating particles and adherent particles formed from sprayed particles after injection. Furthermore, it has been achieved based on the direction that it is important to increase the ratio of the adherent particles settling on the floor surface rather than adhering to the wall surface or the like. In addition, since the adhesive particles of the present invention also enter into the gaps and shade in the process of reaching sedimentation, when a pyrethroid compound is used as a control component, a flushing effect of cockroaches jumping out from the gaps or shade is also expected sufficiently. It is possible.

As the volatile control component used in the present invention, a crawling pest control compound for controlling crawling pests typified by cockroaches, and/or a tick control mainly for controlling indoor dust mites Compounds for use can be used. Examples of compounds for controlling crawling pests include phenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, phenpropatrine, tralomethrin, etofenprox, pyrethroid compounds such as imiprothrin, silaflufen and other silicon compounds, dichlorvos, and the like. Examples include organophosphorus compounds such as fenitrothion, carbamate compounds such as propoxur, dinotefuran, imidacloprid, and neonicotinoid compounds such as clothianidin, as well as fipronil and indoxacarb. Among these, phenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, phenpropatrine, tralomethrin, etofenprox, and dinotefuran are preferable. In the case where the acid component or alcohol moiety of the pyrethroid compound has optical isomers or geometric isomers based on asymmetric carbon, each of them and any mixture thereof are of course included in the present invention.

Examples of compounds for controlling ticks include amidoflumet, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dipropyl phthalate, dibutyl phthalate, p-menthane-3,8. Examples thereof include diol, 3-iodo-2-propynylbutyl carbamate, phenothrin, and diet. Amidoflumet, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate. , Dibutyl phthalate, p-menthane-3,8-diol, phenothrin, and diet are preferred.

According to the method for controlling pests and mites of the present invention, a small amount of a fixed amount of an aerosol stock solution containing a control component and an organic solvent is sprayed in a space. The content of the control component in the aerosol stock solution is preferably about 1.0 to 70 w/v%. If the content of the controlling component in the aerosol stock solution is less than 1.0 w/v%, the desired control effect cannot be obtained, and if it exceeds 70 w/v%, it is difficult to stabilize the liquid properties of the aerosol stock solution.

In the present invention, in addition to the above-mentioned hardly volatile control components, after the space injection treatment, vapor at 30° C. is added so that some spray particles may remain floating in the air and exert control effects against flying insects. A room temperature volatile control component having a pressure of 2×10 ⁻⁴ mmHg or more and less than 1×10 ⁻² mmHg may be added. Examples of the room temperature volatile control component include metofluthrin, profluthrin, transfluthrin, empentrin, terrarethrin, and flamethrin. It has been recognized that the room-temperature volatile control component can synergistically enhance the control effect against crawling pests and/or indoor dust mites when partly attached to the floor surface or wall surface together with the hardly-volatile control component. In addition, the room temperature volatile control component, vapor pressure and stability, considering the basic insecticidal efficacy, etc., metofluthrin, profluthrin, and transfluthrin are preferable, in the acid component and alcohol portion of these compounds, asymmetric carbon When the optical isomers and geometrical isomers based on each exist, each of them and arbitrary mixtures are of course included in the present invention.

In the present invention, an organic solvent is blended in order to dissolve the above-mentioned hardly volatile control component to form an undiluted aerosol solution. Examples of the organic solvent include lower alcohols having 2 to 3 carbon atoms, hydrocarbon solvents such as normal paraffin and isoparaffin, ester solvents such as isopropyl myristate (IPM) and hexyl laurate, and 3 to 10 carbon atoms. The glycol ether-based solvent, the ketone-based solvent and the like are mentioned, but a lower alcohol having 2 to 3 carbon atoms represented by ethanol or isopropanol (IPA) is preferable.

The method for controlling pests and mites of the present invention uses a pest containing a volatile control component and an aerosol for controlling mites, and sprays the indoor space with a spray volume of 1.0 to 5.0 mL per time. Therefore, the control effect against the crawling pests and/or indoor dust mites in the treated area is maintained for several days. The size of the indoor space should be 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. Is preferred.

The sprayed particles after jetting are formed as floating particles floating in the processing space or as adhesive particles adhering to the exposed portion in the processing space, but the present inventors consider that the adhesive particles are more dominant. None, and further, among the adhesive particles, a study was conducted to increase the ratio of the adhesive particles involved in sedimentation to the floor surface rather than to the wall surface. As a result, the inventors have found that the specific gravity of the aerosol stock solution and the jetting force of the aerosol are important factors that determine the behavior of the adhesive particles involved in sedimentation, and to identify their optimum range. I arrived. That is, if the specific gravity of the aerosol stock solution is 0.85 to 1.15, preferably 0.89 to 1.10, and the injection force of the injection process is 10 to 50 gf, preferably 15 to 35 gf at an injection distance of 5 cm, It was confirmed that 60% or more of the control components were settled and adhered to the entire floor surface of the indoor space by 1 hour after the injection, and an excellent control effect against crawling pests and mites could be achieved. Regarding the "precipitation and adhesion of the control component over the entire floor surface", it is not necessary to check each time whether the control component actually settles or adheres over the entire floor surface. If it is sprayed in a manner in line with the purpose of, even if there is some distribution or deviation in the settling/adhesion state of the sprayed control component to the floor surface, the control component will settle and adhere to the entire floor surface. It can be regarded as a living thing, and there is no practical problem even if it is regarded as such. If the specific gravity of the aerosol concentrate is less than 0.85, the amount of spray particles attached to the floor tends to be insufficient, and if the specific gravity of the aerosol concentrate exceeds 1.15, on the contrary, the settling of the spray particles is too rapid. As a result, the diffusion property over the entire floor surface becomes insufficient. Further, if the injection force of the injection process is less than 10 gf, the injection force tends to be insufficient and the diffusivity over the entire floor surface tends to be insufficient. Even if the injection force exceeds 50 gf, good diffusivity can be obtained. I can't. The injection force of the aerosol can be adjusted as appropriate by changing the formulation of the undiluted aerosol solution, the internal pressure of the aerosol, the shape of the injection port, and the like.

Further, the pest and mite control aerosol has the following formula, where a is the amount of the aerosol stock solution filled, b is the amount of the propellant filled, S is the specific gravity of the aerosol stock solution, and F is the spray force of the pest and tick control aerosol. Formula (1):
δ=[a/(a+b)]×S ² ×F (1)
Is preferably in the range of 1.0 to 30, and more preferably in the range of 3.0 to 15.

When δ is in the range of 1.0 to 30, a sufficient control effect is obtained because a sufficient amount of the control component is uniformly diffused over the entire floor surface when the spray particles settle. The uniform distribution of the control component to the entire floor surface means that the initial velocity of the spray particles sprayed from the pest and mite control aerosol is appropriate, and the spray particles quickly spread to every corner of the indoor space after spraying. It is thought to be because. When δ is less than 1.0, the amount of the control component attached to the floor surface may be insufficient. On the other hand, when δ exceeds 30, the diffusivity over the entire floor surface may be insufficient. Therefore, if δ is out of the range of 1.0 to 30, it may not be possible to obtain a satisfactory control effect.

The pest and mite control aerosol has a volume ratio [a/(a+b)] of the filling amount a of the aerosol undiluted solution to the total volume (a+b) of the pest and mite control aerosol, which is represented by the following formula (2):
0.1 ≤ [a/(a+b)] ≤ 0.5 (2)
It is preferable to satisfy. When the volume ratio is within the above range, a sufficient amount of the controlling component is uniformly diffused over the entire floor surface. If the volume ratio is less than 0.1 and the amount of propellant is too large, the amount of the control component deposited on the floor surface will be insufficient. On the other hand, if the volume ratio exceeds 0.5, the spray particles settle down too quickly and the diffusivity over the entire floor becomes insufficient.

Pests used in the present invention, the aerosol for controlling ticks is a small amount of injection, it is not necessary to dare to pay attention to the risk of fire, but it is also possible to employ an aqueous formulation from the viewpoint of reducing the risk of fire as much as possible. .. In this case, it is appropriate that the amount of water contained in the aerosol stock solution is about 20 to 70 v/v%, and as long as it does not affect the spray pattern of the spray particles, a small amount of nonionic surface active agent as a solubilizing aid. Agents may be added. Examples of nonionic surfactants include ethers such as polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene alkylamino ethers, and polyethylene glycol. Fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene glycerin fatty acid esters and other fatty acid esters, polyoxyethylene styrenated phenols, fatty acid polyalkalolamides, and the like, among which ethers are suitable ing.

In the aerosol stock solution, in addition to the above components, fungicides for fungi, fungi, antibacterial agents and bactericides, or fragrances, deodorants, stabilizers, antistatic agents, defoamers, Excipients and the like can be appropriately mixed. As an antifungal agent, an antibacterial agent or a bactericide, hinokitiol, 2-mercaptobenzothiazole, 2-(4-thiazolyl)benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one, triphorin, 3- Examples include methyl-4-isopropylphenol and ortho-phenylphenol. Further, as the fragrance, 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, linalool, geraniol, Examples include, but are not limited to, aromatic components such as phenylethyl alcohol, amylcinnamic aldehyde, cumin aldehyde, and benzyl acetate, and perfume components containing green leaf alcohol or green leaf aldehyde called “green scent”.

Examples of the propellant used in the present invention include liquefied petroleum gas (LPG), liquefied gas such as dimethyl ether and hydrofluorocarbon, and compressed gas such as nitrogen gas, carbon dioxide gas, nitrous oxide, and compressed air. Alternatively, two or more kinds can be appropriately adopted. The propellant may be appropriately determined in consideration of the adhering rate of the spray particles to the floor surface or the wall, but it is usually easy to use one mainly composed of LPG. The propellant is preferably used after adjusting the gauge pressure (20° C.) to 0.1 to 0.7 MPa.

The above-mentioned pest and mite control aerosol is provided with a fixed amount injection valve having an injection volume of 1.0 to 5.0 mL per time, and is subjected to a fixed amount injection process indoors. Conventionally, the injection volume of the constant-quantity injection valve was 0.2 to 0.4 mL, but in the constant-quantity injection valve used in the present invention, the necessary effective component amount can be injected with one push as the volume increases. .. In addition, the shape of the nozzle, the nozzle, the container, and the like can be appropriately selected according to the application, the purpose of use, and the like. For example, it can be designed as a table-top type having a button for pushing from above and jetting and a nozzle directed obliquely upward, or designed for carrying a small container.

In the pest and mite control method of the present invention, the pest and mite control aerosol thus obtained are used, and the injection volume per injection is 1.0 to 5.0 mL, preferably 1.0 to 3.0 mL, and is used indoors. By performing the injection treatment toward the air in the space, the release amount of the control component to the air is set to 0.1 to 50 mg/m ³ , preferably 0.5 to 50 mg/m ³ . .. Injection processing is performed in an indoor space with a volume corresponding to a room of 4.5 to 8 tatami mats of 18.8 to 33.3 m ³ (area 7.5 to 13.3 m ² , height 2.2 to 3.0 m). In this case, the amount of the controlled component released into the air is usually 0.1 to 50 mg/m ³ by injecting the aerosol undiluted solution once, but in a larger indoor space, the volume of the indoor space is increased. In accordance with this, the same control effect can be obtained regardless of the size of the indoor space by injecting the aerosol stock solution a plurality of times so that the release amount of the control component in the air is 0.1 to 50 mg/m ^3. it can. For example, when performing the injection process in an indoor space having a volume of 37.6 to 66.6 m ³ (area 15 to 26.6 m ² , height 2.2 to 3.0 m) corresponding to a room of 9 to 16 tatami mats, By spraying the aerosol undiluted solution twice, the release amount of the control component into the air becomes 0.1 to 50 mg/m ³ . As for the frequency of use of the pest and mite control aerosol, once a day or two once a day, if applied so that the release amount of the control component is within the above range, the crawling pests and/or indoor dust mites The control effect can be maintained for several days. In addition, it is possible to impart a controlling effect against flying insects by using a controlling component which is volatile at room temperature.

The pests of the present invention, the method for controlling ticks, particularly, German cockroaches, American cockroaches, cockroaches such as black cockroaches, ants, bed bugs, bed bugs such as nettite white lice, bed bugs, weevil, stag beetle, worm insects such as woodworm. , And it is effective for controlling indoor dust mites such as Acarina pallidum, Dermatophagoides farinae, Dermatophagoides farinae, and Aphididae. However, it is not limited to these crawling pests and mites, and pests that fly indoors to cause damage and discomfort to humans, for example, mosquitoes such as mosquitoes, Aedes albopictus, chironomids, house flies, butterfly flies, flies, and flies. It is also well applied to the control of various pests such as bees, bees and leafhoppers.

Based on specific examples and test examples, the pest control method, the mite control method, and the pest control and mite control aerosol of the present invention will be described in more detail. However, the present invention is not limited to these.

[Example 1]
Phenothrin 53 w/v% and metfluthrin 0.7 w/v% were dissolved in ethanol to prepare an aerosol stock solution. 12 mL of this aerosol stock solution (a) and 18 mL of liquefied petroleum gas (b) as a propellant were injected at a volume of 1.0 mL so that the volume ratio [a/(a+b)] of the aerosol stock solution would be 0.4. An aerosol container (pressure resistant container) equipped with a certain metering valve was pressurized and filled to obtain an insect pest and mite control aerosol of Example 1. The specific gravity of this aerosol undiluted solution was 0.93, and the ejection force of this aerosol at an ejection distance of 5 cm was 26 gf. Further, δ was 9.0.

In the center of an almost closed room having a volume of 25 m ³ (equivalent to a room of 6 tatami mats and an area of 10 m ² ), an injection treatment was performed by one-shot one shot of an insect pest and tick control aerosol. The adhesion rate (%) of the control component to the floor surface was calculated from the analysis result by gas chromatography described below and the amount of the control component released from the aerosol. As a result, 72% of the total spray particles sprayed by this spraying process (that is, 72% of the release amount of the controlling component) was settled and adhered to the entire floor surface by 1 hour after the spraying process. confirmed. Then, for several days after the spraying treatment, it exerted an excellent control effect against crawling insects such as cockroaches, ants, and hornworms, and did not attract indoor dust mites. In addition, in the center of an almost sealed room with a volume of 50 m ³ (equivalent to an area of 12 tatami mats with an area of 20 m ² ), the spray treatment was performed by spraying the pest and mite control aerosol slightly obliquely upward. It was also confirmed that, as in the case of a room with a volume of 25 m ³ , it exhibits a control effect against the crawling pests.

[Examples 2 to 24, Comparative Examples 1 to 4]
According to Example 1, aerosols for controlling various pests and mites shown in Table 1 were prepared. The aerosols for controlling pests and mites of Examples 2 to 21 and 23 to 24 and Comparative Examples 1 and 3 to 4 were aerosol containers with a metering spray valve having a spray volume of 1.0 mL, and the aerosol of Example 22 was used. An aerosol container with a fixed spray valve having a spray volume of 2.2 mL was used for the pest and mite control aerosol, and a fixed spray valve with a spray volume of 0.4 mL was used for the pest and mite control aerosol of Comparative Example 2. An attached aerosol container was used.

The following tests were conducted using the pest and mite control aerosols of Examples 1 to 24 and Comparative Examples 1 to 4. For indoor dust mites, the control effect was first examined, and when the control effect was poor, the repellent effect was evaluated. The test results are summarized in Table 2.

(1) Extermination effect against crawling pests A total of 12 glass plates of 20 x 20 cm (4 for the German cockroach, 4 for the cockroach, and 4 for the black ant) are installed in the four corners of a room with a volume of 25 m ³ (area 10 m ² ). Then, place a plastic ring with a diameter of about 20 cm on each glass plate, and freely release the prescribed test insects (German cockroach: 5 adults, American cockroach: 5 larvae, Black ant: 5) in each ring. I wandered around. One shot of the test aerosol directed slightly obliquely upward in the center of the room (injection volume: Examples 1 to 21, 23 to 24, Comparative Examples 1 and 3 to 4 1.0 mL, Example 22 2.2 mL, Comparative Example 2 0.4 mL) was injected. After being left for 24 hours to be exposed to the drug, the glass plate together with the ring containing the test insect was moved to another room and fed, and after 24 hours, the mortality rate of the test insect was determined.

(2) Extermination effect against indoor dust mites Eight waist-sized petri dishes with a diameter of 9 cm and a height of 6 cm (4 for Kona deer miters and 4 for Aedes albopictus) are fully enclosed in a room with a volume of 25 m ³ (area 10 m ² ). Each of the predetermined test mites was placed in a waist-high petri dish and about 200 each of them was tested. The test aerosol was sprayed in the center of the room, slightly obliquely upward, one shot. After being left for 24 hours to be exposed to the drug, the mortality rate of the test mites was determined.

(3) Repellent effect against indoor dust mites In the above “(2) Control effect against indoor dust mites” test, a cotton cloth with a diameter of about 4 cm was installed in the four corners of the room instead of the tested mites. One-shot spray of aerosol. Twenty-four hours after the spraying, the cotton cloth was taken out and fitted into a petri dish having a diameter of 4 cm, and 50 mg of the citation medium was placed in the center of the petri dish. Separately from this, about 10000 sample Dermatophagoides farinae or Dermatophagoides farinae were released together with a medium in a petri dish having a diameter of 9 cm, and the petri dish having a diameter of 4 cm prepared above was placed in the center of the petri dish having a diameter of 9 cm. Similarly, an untreated section was prepared using a cotton cloth that was not treated with the test aerosol. After 24 hours, the number of mites that had invaded the cotton cloth was counted, and the tick repellent rate was calculated according to the following formula.
Mite repellent rate (%) = [(number of invading mites in untreated area-number of invading mites in treated area) / number of invading mites in untreated area] x 100

(4) Adhesion rate of the control component on the floor A 20 x 20 cm glass plate is evenly installed throughout the room at 6 to 8 locations on the floor of a room (area 10 m ² ) with a closed volume of 25 m ³ and the test aerosol is used. Was fired one shot in a slightly diagonally upward direction in the center of the room. One hour after the spraying treatment, all the glass plates were taken out, the attached control components were washed out with acetone and analyzed by gas chromatography. Based on the obtained analysis values, the ratio (floor surface adhesion rate) of the control component settling and adhering to the floor surface to the theoretical total injection amount of the control component by 1 hour after the injection treatment was determined. In addition, regarding the control component adhering to the glass plate, the dispersion between the glass plates was analyzed to evaluate the diffusion uniformity of the spray particles. The results are shown in four stages of A, B, C and D in order from the one having good diffusion uniformity.

As a result of the test, according to the pests of Examples 1 to 24 and the pest and mite control method of the present invention using the mite control aerosol, the spray particles are diffused substantially uniformly over the entire floor surface, and 1 hour after the injection. It was confirmed that 60% or more of the control component settles and adheres to the floor surface. Moreover, when using the insect pests of Examples 1 to 16 and 20 to 24 containing a compound for controlling crawling pests as a difficult volatilizing control component, and an aerosol for controlling mites, crawling pests and indoor dust mites It was confirmed that an excellent control effect was exerted on any of the above. When the pests of Examples 17 to 19 and the mite-controlling aerosol containing the mite-controlling compound are used as the difficult-to-volatile control component, an excellent controlling effect against indoor dust mites can be obtained. confirmed.

On the other hand, in Comparative Examples 1 to 4, sufficient control effect was not obtained against any of the crawling pests and indoor dust mites. In Comparative Example 1, since the aerosol containing only the room temperature volatile pyrethroid compound such as empentrin was used as the controlling component, the floor adhesion rate was reduced, and as a result, the controlling effect is considered to be low. In Comparative Example 2, since the fixed amount injection valve having an injection capacity of 0.4 mL was used, the control component to be injected could not reach the required amount by one push, and as a result, the control effect may be low. As in Comparative Examples 3 and 4, in the case where the specific gravity of the aerosol undiluted solution is out of the range of 0.85 to 1.15 specified in the present invention, the diffusion uniformity of the sprayed particles was low, which indicates the control effect. Is considered to be the cause of the decrease in

INDUSTRIAL APPLICABILITY The pest control method, the mite control method, and the pest control and mite control aerosol of the present invention can be used not only indoors but also for a wide range of pest control and mite control.

Claims (9)

For controlling pests and mites, an aerosol stock solution containing a control component and an organic solvent, and a propellant are filled in an aerosol container equipped with a constant-quantity injection valve having an injection volume of 1.0 to 5.0 mL per injection. A method for controlling pests and ticks, which comprises spraying with an aerosol,
The control component is a fugitive compound having a vapor pressure at 30° C. of less than 1×10 ⁻⁴ mmHg,
The specific gravity of the aerosol stock solution is 0.85 to 1.15,
The spray force of the pest and tick control aerosol is 10 to 50 gf at a spray distance of 5 cm,
In the injection process, the aerosol undiluted solution is injected into the air of the indoor space so that the release amount of the control component is 0.1 to 50 mg/m ^3, and 60% of the control component is injected one hour after the injection. A method for controlling pests and ticks, wherein the above is diffused and attached to the entire floor surface of the indoor space. When the pest and mite control aerosol is a filled amount of the aerosol stock solution, b is the propellant filled amount, S is the specific gravity of the aerosol stock solution, and F is the spray force of the pest and tick control aerosol. , The following equation (1):
δ=[a/(a+b)]×S ² ×F (1)
The method for controlling pests and mites according to claim 1, wherein δ defined in 1 is configured to be in the range of 1.0 to 30. The pest and mite control aerosol has the following formula (2):
0.1 ≤ [a/(a+b)] ≤ 0.5 (2)
The method for controlling pests and mites according to claim 2, which is configured to satisfy the following. The pest and mite control aerosol has the following formula (3):
3.0 ≤ δ ≤ 15 (3)
The pest and mite control method according to claim 2 or 3, which is configured to satisfy the above. The fugitive compound is a compound for controlling at least one crawling pest selected from the group consisting of phenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropatrine, tralomethrin, etofenprox, and dinotefuran. The method for controlling pests and mites according to any one of claims 1 to 4. The fugitive compound is derived from amidoflumet, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dibutyl phthalate, and p-menthane-3,8-diol. The method for controlling pests and mites according to claim 1, which is at least one compound for controlling ticks selected from the group consisting of: The method for controlling pests and mites according to claim 1, wherein the organic solvent is a lower alcohol having 2 to 3 carbon atoms. The area of the floor surface of the said indoor space is 7.5-26.6 m< ² >, The pest, the tick control method in any one of Claims 1-7. For controlling pests and mites, an aerosol stock solution containing a control component and an organic solvent, and a propellant are filled in an aerosol container equipped with a constant-quantity injection valve having an injection volume of 1.0 to 5.0 mL per injection. An aerosol,
The control component is a fugitive compound having a vapor pressure at 30° C. of less than 1×10 ⁻⁴ mmHg,
The specific gravity of the aerosol stock solution is 0.85 to 1.15,
The spray force of the pest and tick control aerosol is 10 to 50 gf at a spray distance of 5 cm,
When the aerosol undiluted solution is injected into the air of the indoor space by a single injection process through the quantitative injection valve so that the release amount of the control component is 0.1 to 50 mg/m ³ , 1 from the injection Aerosol for controlling pests and mites in which 60% or more of the control component diffuses and adheres to the entire floor surface of the indoor space by the lapse of time.