JP7190255B2 - Repelling method of creeping pests - Google Patents

Description

The present invention relates to a method for repelling creeping pests. More particularly, the present invention relates to a method for repelling creeping pests for reducing the number of insect bodies remaining in an application site by repelling creeping pests such as mites.

Conventionally, a method for controlling pests and mites is known in which an insecticidal or acaricidal composition is applied directly to pests or mites or to their habitats (for example, Patent Document 1).

Japanese Unexamined Patent Application Publication No. 2001-10907

The method described in Patent Document 1 intends to control pests and mites by using insecticidal and acaricidal compositions. Therefore, in the method for controlling insect pests and mites described in Patent Document 1, dead bodies (insect bodies) of mites and the like tend to remain at the application site, making it difficult to reduce mite allergens.

The present invention has been made in view of such conventional problems. The purpose is to provide a method of avoiding

As a result of intensive studies, the present inventors found that by injecting a fixed amount of an aerosol composition containing a repellent component downward using an aerosol product, the same amount of treatment can be achieved using a pump product or the like. The present inventors have found that crawling pests such as mites are less likely to die and can be repelled, compared with the case where the method is applied, and have completed the present invention. That is, the method for repelling crawling pests of the present invention, which solves the above problems, mainly includes the following configurations.

(1) A method of repelling crawling pests, comprising downwardly injecting the aerosol composition from a metered-dose aerosol product filled with an aerosol composition containing a stock solution containing a component that repels crawling pests and a propellant.

(2) Repelling crawling pests according to (1), wherein the injection amount per time is 0.2 to 1.0 mL, and the treatment volume is 0.2 to 1.0 mL per tatami mat. Method.

(3) The method for repelling crawling pests according to (1) or (2), wherein the aerosol composition is jetted so that the mean particle size (D50) is 15 to 95 μm.

(4) The method for repelling creeping pests according to any one of (1) to (3), wherein the repelling component is a pyrethroid compound, and the creeping pests are mites.

According to the present invention, it is possible to provide a method for repelling creeping insects such as mites, which is less likely to kill them and reduces the number of insects remaining in the application site by repelling them.

FIG. 1 is a schematic diagram of an experimental apparatus for explaining a method for confirming a repelling effect.

[Method for Repelling Crawling Pests]
A method for repelling creeping pests (hereinafter also referred to simply as a method for repelling creeping pests) of one embodiment of the present invention is a metered injection type aerosol product filled with an aerosol composition containing a stock solution containing a component for repelling creeping pests and a propellant. , the aerosol composition is jetted downward. Each of these will be described below. In the following description, the configuration of the metered injection type aerosol product (aerosol container, aerosol valve, injection member, etc.) is not particularly limited.

<Fixed quantity spray type aerosol product>
The metered injection type aerosol product (hereinafter also simply referred to as an aerosol product) of the present embodiment comprises an aerosol container filled with an aerosol composition containing a stock solution and a propellant, and a metered injection aerosol valve (hereinafter referred to as an aerosol valve) attached to the aerosol container. , simply called an aerosol valve), and an injection member attached to the aerosol container via the aerosol valve.

(aerosol container)
An aerosol container is a pressure-resistant container for filling an aerosol composition under pressure. The aerosol container is a substantially cylindrical container having a space inside which is filled with an aerosol composition. An opening is provided at the top of the aerosol container. The opening is sealed by an aerosol valve, described below.

The material of the aerosol container is not particularly limited. For example, the aerosol container may be made of various pressure-resistant metals, resins, glass, or the like.

- Undiluted solution The undiluted solution is a component that can constitute the aerosol composition together with the propellant. The stock solution is filled into an aerosol container when the aerosol composition is prepared. The stock solution contains a repellent component for crawling pests.

The repellent component for creeping pests is not particularly limited. Examples of repellent ingredients include mint oil, orange oil, fennel oil, cinnamon oil, clove oil, turpentine oil, eucalyptus oil, cedar oil, jasmine oil, neroli oil, peppermint oil, bergamot oil, butigren oil, and lemon oil. , lemongrass oil, cinnamon oil, citronella oil, geranium oil, citral, l-menthol, citronellyl acetate, cinnamic aldehyde, terpineol, nonyl alcohol, cis-jasmon, limonene, linalool, 1,8-cineole, geraniol, α- Various essential oil components such as pinene, p-menthane-3,8-diol, eugenol, menthyl acetate, thymol, benzyl benzoate, benzyl salicylate, propylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monopropyl ether, Glycol ethers such as propylene glycol monobutyl ether, dipropylene glycol dimethyl ether, ethylene glycol monoisobutyl ether, diethylene glycol monoisobutyl ether, diethylene glycol dibutyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, dibasic acid esters such as dibutyl adipate, pyrethrin , allethrin, phthalthrin, resmethrin, flamethrin, phenothrin, permethrin, empentrin, prallethrin, cyphenothrin, imiprothrin, transfluthrin, imiprothrin, transfluthrin, metofluthrin, profluthrin, mepafluthrin, dimefluthrin and other pyrethroid compounds, fenitrothion, dichlorvos, chlorpyrifosmethyl, diazinon, fenthion, etc. organic phosphorus compounds, carbamate compounds such as carbaryl and propoxur, methoprene, pyriproxyfen, methoxadiazon, fipronil, amidoflumet and the like.

Among these, the repellent component is preferably a pyrethroid compound or an essential oil component, and more preferably includes phenothrin, transfluthrin, and menthyl acetate, since it is difficult to kill crawling pests and easy to repel them.

The content of the repellent component is not particularly limited as long as the repellent effect is sufficiently exhibited and the lethal effect is hardly exhibited. For example, the content of the repellent component is preferably 1% by mass/volume or more, more preferably 5% by mass/volume or more in the aerosol undiluted solution. Also, the content of the repellent component may be 100% by mass/volume in the aerosol composition. When the content of the repellent component is within the above range, the repelling method of the present embodiment hardly kills crawling pests and easily repels them.

In particular, when the repellent component is a pyrethroid compound or an essential oil component, the content thereof in the aerosol composition is preferably 1% by mass/volume or more, more preferably 5% by mass/volume or more. . Moreover, the content of the pyrethroid compound and the essential oil component may be 100% by mass/volume in the aerosol composition. When the content of the pyrethroid compound and the essential oil component is within the above range, the repelling method of the present embodiment hardly kills crawling pests and easily repels them.

The stock solution may be mixed with a solvent. A solvent is preferably contained, for example, for uniformly blending the repellent component and optional components. Examples of solvents include lower alcohols such as ethanol and propanol, polyhydric alcohols such as glycerin and ethylene glycol, linear, branched or cyclic paraffins, petroleum oils such as kerosene, water, isopropyl myristate, and laurin. and esters such as hexyl acid.

When a solvent is contained, the content of the solvent is preferably 1 mass/volume % or more, more preferably 10 mass/volume % or more, in the stock solution. In addition, the content of the solvent is preferably 99% by mass/volume or less, more preferably 90% by mass/volume or less, in the undiluted solution. When the content of the solvent is within the above range, the repellent component and the optional component are easily blended uniformly in the stock solution.

The undiluted solution may contain appropriate optional components in addition to the above repellent component and solvent. Optional components include, for example, nonionic, anionic or cationic surfactants, antioxidants such as butylhydroxytoluene, stabilizers such as citric acid and ascorbic acid, inorganic powders such as talc and silicic acid, bactericidal components, Antifungal ingredients, deodorant ingredients, aromatic ingredients, fragrances, pigments, and the like.

-Propellant The propellant is a medium for injecting the concentrate, and is pressurized and filled into the aerosol container together with the concentrate. The propellant is not particularly limited. By way of example, propellants are hydrofluoroolefins, dimethyl ether (DME), liquefied petroleum gas (LPG), and the like. A propellant may be used in combination.

In the aerosol composition of the present embodiment, in addition to the propellant, a compressed gas such as carbon dioxide gas, nitrogen gas, compressed air, or oxygen gas may be used in combination in order to adjust the pressure of the aerosol composition. .

The mixing ratio (volume ratio) of the stock solution of the aerosol composition and the propellant is preferably 1:99 to 70:30, more preferably 5:95 to 50:50, and 10:90 to 30:70. is more preferable. With such a volume ratio, the range of the mean particle size of the sprayed aerosol composition of the aerosol product is easily adjusted to the range described below. As a result, the repelling method of the present embodiment is less likely to kill crawling pests and easier to repel them.

(aerosol valve)
The aerosol valve is a mechanism for taking out the aerosol composition filled in the aerosol container, and closes the opening of the aerosol container. Further, the aerosol valve of the present embodiment is formed with a metering chamber for temporarily storing the aerosol composition taken out from the aerosol container. The volume of the metering chamber corresponds to the volume of the aerosol composition delivered by one shot.

The volume of the metering chamber is not particularly limited. For example, the volume of the metering chamber is preferably 0.2 mL or more. Moreover, the volume of the quantitative chamber is preferably 1.0 mL or less. When the volume of the metering chamber is within the above range, the average particle size of the sprayed aerosol composition of the aerosol product is easily adjusted to the range described below. As a result, the repelling method of the present embodiment is less likely to kill crawling pests and easier to repel them.

The aerosol valve comprises an opening/closing member for switching between communication and blocking between the metering chamber and the outside of the aerosol valve when the injection member is operated by the user, a housing to which the opening/closing member is attached, and a predetermined portion of the aerosol container. A mounting member is provided for holding in position. Also, the opening/closing member includes a stem that slides up and down in conjunction with the injection member. By sliding the stem, communication (injection state) and blocking (non-injection state) of the aerosol composition are switched. The aerosol valve is formed with a housing hole for taking in the aerosol composition from the aerosol container and a stem hole for sending the taken in aerosol composition to the injection member. A housing hole is formed in the housing. A stem hole is formed in the stem. The path from the housing bore to the stem bore constitutes an internal passageway through which the aerosol composition passes.

The stem is the portion that is attached to the aerosol valve and defines an internal passageway for conveying the aerosol composition captured by the aerosol valve to the spray button. The internal passage is appropriately opened and closed by the stem rubber.

The internal pressure of the aerosol valve at 25° C. is preferably 0.2 MPa or higher, more preferably 0.25 MPa or higher, in a state filled with the stock solution and the propellant. Also, the internal pressure of the aerosol valve at 25° C. is preferably 0.8 MPa or less, more preferably 0.7 MPa or less. If the internal pressure of the aerosol valve is less than 0.2 MPa, the aerosol composition may drip from the nozzle after injection. On the other hand, if the internal pressure of the aerosol valve exceeds 0.8 MPa, the aerosol composition may leak from the aerosol container. The internal pressure of the aerosol valve is, for example, at 25°C, and a PGM-E compact pressure sensor (manufactured by Kyowa Dengyo Co., Ltd.) attached to a WGA-710C instrumentation conditioner (manufactured by Kyowa Dengyo Co., Ltd.) is attached to the aerosol valve. It can be measured by connecting

(injection member)
The injection member is a member for injecting the concentrate taken from the aerosol container together with the propellant. The injection member is formed with a nozzle hole for injecting the aerosol composition.

The number, size and shape of the orifices are not particularly limited. The number, size and shape of the orifices can be appropriately adjusted, for example, so that the average particle size of the jetted aerosol composition can be adjusted within the range described below. For example, the number of nozzle holes may be one, or two or more. Moreover, the dimension of the nozzle (orifice diameter) is preferably 0.2 mm or more, more preferably 0.3 mm or more. Also, the nozzle diameter is preferably 4.5 mm or less, more preferably 3.0 mm or less. The shape (cross-sectional shape) of the orifice may be circular, elliptical, square, or various irregular shapes.

Moreover, the total cross-sectional area (total opening area) of the nozzle hole is not particularly limited. The total cross-sectional area is appropriately adjusted, for example, so that the average particle size of the jetted aerosol composition can be adjusted within the range described below. For example, the total cross-sectional area is preferably 0.03 mm ² or more, more preferably 0.07 mm ² or more. Also, the total cross-sectional area is preferably 16.0 mm ² or less, more preferably 7.5 mm ² or less. In this embodiment, the "total cross-sectional area" is the total cross-sectional area (opening area) of the orifice. That is, when there is one orifice, the total cross-sectional area is the cross-sectional area of the orifice itself, and when there are two or more orifices, the total cross-sectional area is the sum of the cross-sectional areas of all the orifices.

In the aerosol product of the present embodiment, when the injection button is operated by the user, the stem mechanism and the aerosol valve are operated, and the metering chamber of the aerosol valve communicates with the outside. As a result, a certain amount of the aerosol composition in the metering chamber of the aerosol valve is taken out according to the pressure difference between the metering chamber of the aerosol valve and the outside, and is jetted from the nozzle of the jetting member.

The aerosol product of the present embodiment is preferably adjusted so that the injection amount per injection is 0.2 mL or more. Also, the aerosol product is preferably adjusted so that the injection amount per injection is 1.0 mL or less. By adjusting the injection amount per injection to be within the above range, the repelling method of the present embodiment is less likely to kill crawling pests at the application site and is easier to repel.

The avoidance method of the present embodiment is characterized by injecting the aerosol composition downward. In this embodiment, "downward" is defined as a downward direction at an angle of 10 to 90 degrees with respect to the floor and the horizontal direction. Also, the injection angle is preferably 20 to 80°, more preferably 30 to 70°. Conventionally, an aerosol composition has been sprayed upward, and the sprayed aerosol composition has been allowed to settle before being applied to the application site. However, such a method has a problem that it is difficult to adjust the processing amount to the application site. Therefore, the repelling method of the present embodiment has the advantage of facilitating adjustment of the treatment amount to the application site by injecting the aerosol composition downward. As a result, the repelling method of the present embodiment is less likely to kill crawling pests and easier to repel them.

In the injection method of the present embodiment, it is preferable to adjust the treatment volume at the application site by injecting downward. The treatment capacity is the injection amount to be treated per tatami mat. Specifically, the treatment capacity is preferably 0.2 mL or more per tatami mat. In addition, it is preferable that the treatment volume is 1.0 mL or less per tatami mat. By adjusting the treatment capacity within the above range, the repelling method of the present embodiment is less likely to kill crawling pests and more likely to be repelled. For example, when the treatment capacity per tatami mat is 0.2 mL, 1 mL injection can treat up to 5 tatami mats, and when the treatment capacity per tatami is 0.5 mL, 1 mL injection can treat up to 2 tatami areas.

The average particle size (D50) of the jetted aerosol composition is not particularly limited. For example, the average particle diameter (D50) is preferably 15 μm or more, more preferably 20 μm or more. Also, the average particle diameter (D50) is preferably 95 μm or less, more preferably 90 μm or less, and even more preferably 70 μm or less. By adjusting the average particle size (D50) within the above range, the repelling method of the present embodiment hardly kills crawling pests and easily repels them. In the present embodiment, the average particle diameter (D50) means D50 (cumulative 50%) measured by a particle size distribution analyzer and analyzed by an automatic processor. Specifically, the average particle diameter (D50) is measured at 25° C. using a laser particle size distribution analyzer (LDSA-1400A, manufactured by Tohnichi Computer Applications Co., Ltd.), auto-start average (3 times averaged) , an interval of 0.60 ms), and refers to the average particle size at a position of 30 cm.

In the repelling method of the present embodiment, the aerosol product is used to inject (aerosol injection) the content (aerosol composition) containing the stock solution and the propellant. In this case, for example, compared with the case where the same undiluted solution is pump-injected so that the active ingredient treatment amount per unit area is the same, crawling pests such as mites are less likely to die and can be repelled.

Further, the avoidance method of the present embodiment is characterized by jetting downward using such an aerosol product. As a result, the repelling method of the present embodiment is less likely to kill crawling pests at the application site and is easier to repel. In order to make it easier to obtain a repelling effect against crawling pests, the injection amount per time, treatment capacity, average particle size (D50) of the injected aerosol composition, and the type of repellent component are adjusted as appropriate. can be

The manufacturing method of the aerosol product used in the repelling method of this embodiment is not particularly limited. For example, an aerosol product can be manufactured by filling an aerosol container with a stock solution, closing the opening of the aerosol container with an aerosol valve, and pressurizing the propellant through the nozzle or stem of the injection member. can.

The type of creeping pest to be repelled by the repelling method of the present embodiment is not particularly limited. To give an example, creeping pests include mites such as Dermatophagoides farinae, Dermatophagoides farinae, Longaphagoides acarina, and Cetacea mite, as well as spiders, centipedes, ants, centipedes, millipedes, pill bugs, woodlice, termites, caterpillars, mites, lice, ixodid ticks, bed bugs, and the like. . Among these, the repelling method of the present embodiment is preferably carried out against mites, lice and bed bugs, and more preferably carried out against mites and lice. When the repelling method of the present embodiment is applied to these creeping pests, the creeping pests are less likely to die and can be repelled. As a result, these crawling pests can be repelled from the application site, and insect bodies are less likely to remain. Therefore, the repelling method of the present embodiment can suppress problems (for example, mite allergy) caused by remaining insect bodies of these creeping pests.

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to Examples. The present invention is by no means limited to these examples. Unless otherwise specified, "%" means "% by mass" and "parts" means "parts by mass".

Details of the aerosol and pump products used are given below.
Aerosol product 1 of Example 1: Injection member (nozzle diameter φ 1.0 mm, one nozzle with a circular cross-sectional shape), aerosol valve (quantitative chamber capacity 0.2 mL)
Aerosol product 2 of Example 2: Injection member (nozzle diameter φ0.6 mm, one nozzle with circular cross-sectional shape), aerosol valve (quantitative chamber capacity 1.0 mL)
Aerosol product 3 of Example 3: Injection member (nozzle diameter φ 1.0 mm, one nozzle with circular cross-sectional shape), aerosol valve (quantitative chamber capacity 0.2 mL)
Aerosol product 4 of Example 4: Injection member (nozzle diameter φ0.3 mm, one nozzle with circular cross-sectional shape), aerosol valve (quantitative chamber capacity 0.2 mL)
Pump product 1 of Comparative Example 1: Pump injection member (nozzle diameter φ0.6 mm, one nozzle with a circular cross-sectional shape), pump valve (discharge capacity 1 mL)

<Regarding differences in formulation types>
We compared the lethal effects of the aerosol product and the pump product against Dermatophagoides farinae under the condition that the amount of chemical treated per unit area was the same.

(Example 1)
A stock solution was prepared by dissolving phenothrin in 99.5% ethanol to a concentration of 35.0 w/v%. The obtained stock solution is filled in an aerosol container with a capacity of 59 mL, and after attaching an aerosol valve, a propellant (liquefied petroleum Gas (saturated vapor pressure: 0.49 MPa (25° C.)) was filled under pressure, an injection member was attached, and a 23 mL aerosol product was produced as a composition (aerosol valve and injection member used aerosol product 1).

(Comparative example 1)
A stock solution was prepared by dissolving phenothrin in 99.5% ethanol to a concentration of 0.315 w/v%. A pump container with a capacity of 300 mL was filled with 250 mL of the obtained stock solution, and a pump valve and a pump injection member were attached to prepare a pump product (pump product 1 was used for the pump valve and pump injection member. ).

The lethal effects of the aerosol products and pump products obtained in Example 1 and Comparative Example 1 were confirmed by the following evaluation methods. Table 1 shows the results.

(Method for confirming lethal effect)
Dermatophagoides leopard mites (approximately 100 to 300) were placed in a waist-high petri dish (φ9 cm, height 6 cm) and placed near the center of the following space. Thereafter, the aerosol product of Example 1 and the pump product of Comparative Example 1 were treated by the following methods, respectively, and allowed to stand for about 15 hours. The injection angle was 30° downward with respect to the horizontal direction. After that, the number of dead test insects was counted. Two tests were performed. The average lethality (%) results are shown in Table 1.

・Method for processing aerosol product The aerosol product prepared in Example ¹ is placed at a distance of 1 m ( It was sprayed once (0.2 mL) from the shortest linear distance to the treated surface on the tall petri dish (the same applies hereinafter). The average particle size of the aerosol composition jetted under these conditions (see below for the measurement method) was 42.8 μm.
- Processing method of pump product The pump product prepared in Comparative Example 1 was sprayed vertically once (1.0 mL) from a distance of 30 cm to the waist-high petri dish placed in a space of 50 cm square. The average particle size of the contents jetted under these conditions (see below for the measurement method) was 162.0 μm.
According to these treatment methods, both Example 1 and Comparative Example 1 are treated with phenothrin to a concentration of about 12 mg/m ² per unit area.

(Method for measuring particle size)
At 25° C., using a laser particle size distribution analyzer (LDSA-1400A, manufactured by Tohnichi Computer Applications Co., Ltd.), a distance of 30 cm from the nozzle as an auto-start average (averaging number of times: 3 times, interval: 0.60 ms). The average particle size (D50) in was measured.

As shown in Table 1, the aerosol product of Example 1 was able to reduce the number of fatalities compared to the pump product of Comparative Example 1. As a result, it was shown that the fatality rate can be reduced by adopting aerosol injection compared to pump injection, even when the treatment concentration is the same.

<Regarding the difference in particle size>
We compared the lethal effects of aerosol products with different particle sizes against Dermatophagoides farinae under the condition that the amount of chemical treated per unit area was the same.

(Example 2)
A stock solution was prepared by dissolving phenothrin in 99.5% ethanol to a concentration of 19.8 w/v%. The obtained stock solution is filled in an aerosol container with a capacity of 59 mL, and after attaching an aerosol valve, a propellant (liquefied petroleum Gas (saturated vapor pressure: 0.49 MPa (25° C.)) was filled under pressure, and an injection member was attached to prepare a 23 mL aerosol product as a composition (aerosol valve and injection member used Aerosol Product 2).

(Example 3)
A stock solution was prepared by dissolving phenothrin in 99.5% ethanol to a concentration of 21.0 w/v%. The obtained stock solution is filled in an aerosol container with a capacity of 59 mL, and after attaching an aerosol valve, a propellant (liquefied petroleum Gas (saturated vapor pressure: 0.49 MPa (25° C.)) was filled under pressure, and an injection member was attached to prepare a 23 mL aerosol product as a composition (aerosol valve and injection member used Aerosol Product 3).

(Example 4)
A stock solution was prepared by dissolving phenothrin in 99.5% ethanol to 15.0 w/v %. The resulting stock solution is filled in an aerosol container with a capacity of 59 mL, and after attaching an aerosol valve, a propellant (liquefied petroleum Gas (saturated vapor pressure: 0.49 MPa (25° C.)) was filled under pressure, an injection member was attached, and a 23 mL aerosol product was produced as a composition (aerosol valve and injection member used aerosol product 4).

The lethal effect of the aerosol products obtained in Examples 2 to 4 was confirmed by the following evaluation method. Table 2 shows the results.

(Method for confirming lethal effect)
Dermatophagoides leopard mites (approximately 100 to 300) were placed in a waist-high petri dish (φ9 cm, height 6 cm) and placed near the center of the following space. After that, each of the aerosol products of Examples 2 to 4 was treated according to the following method and allowed to stand for about 15 hours. The injection angle was 30° downward with respect to the horizontal direction. After that, the number of dead test insects was counted. Two tests were performed. The average lethality (%) results are shown in Table 2.

- Processing method of aerosol product The aerosol product prepared in Example 2 is placed in a 2 tatami space (dimensions: 1.82 m x 1.82 m, 3.31 m ² ) with respect to the waist-deep petri dish, from a distance of 1 m. One injection (1 mL) was applied. In addition, the aerosol products prepared in Examples 3 and 4 were placed in a 1 tatami space (dimensions: 0.91 m × 1.82 m, 1.66 m ² ) against the waist-deep Petri dish from a distance of 1 m. One injection (0.2 mL) was applied. The average particle size of the aerosol composition jetted under these conditions (see the measurement method below) was 20.9 μm in Example 2, 69.7 μm in Example 3, and 93.1 μm in Example 4. rice field.
According to these treatment methods, all of Examples 2 to 4 are treated with phenothrin to a concentration of about 12 mg/m ² per unit area.

(Method for measuring particle size)
At 25° C., using a laser particle size distribution analyzer (LDSA-1400A, manufactured by Tohnichi Computer Applications Co., Ltd.), a distance of 30 cm from the nozzle as an auto-start average (averaging number of times: 3 times, interval: 0.60 ms). The average particle size (D50) in was measured.

As shown in Table 2, it was found that the fatality rate can be further reduced when the average particle size (D50) is 20.9 to 69.7 μm. Moreover, it was found that the average fatality rate could be reduced more than the pump product of Comparative Example 1.

<About repelling effect>
We compared the repelling effects of aerosol products and pump products with different particle sizes against Dermatophagoides farinae under the condition that the amount of chemical treated per unit area was the same.
FIG. 1 is a schematic diagram of an experimental apparatus for explaining a method for confirming a repelling effect. As shown in FIG. 1, in a petri dish 1 with a diameter of 15 cm, 2 black papers of 9 cm square and 4 sheets of cotton cloth of 3.5 cm square are placed in order from the bottom of the petri dish 1 (2 each of lengthwise and breadthwise, cotton cloths 3a to 3d). , 2 cm square black paper 4 was placed in the center of each cotton cloth 3 , and food (fresh medium 5 ) was placed on each black paper 4 . Of the cotton cloths 3a to 3d, the cotton cloth 3a and the cotton cloth 3c were sprayed with the contents using the aerosol product of Examples 1 to 4 or the pump product of Comparative Example 1 by the following method. As a result, the four cotton cloths 3a to 3d are alternately arranged with the repelling treated ones and the non-repellent ones. About 500 to 1000 test insects (Dermatophagoides leopard mites) were placed almost evenly on four outer sides of the black paper 2 . After standing overnight under the conditions of 25°C and 75% RH, the number of test insects crawling up the treated area (cotton cloth 3a and cotton cloth 3c) and the untreated area (cotton cloth 3b and cotton cloth 3d) was counted. The repelling rate (%) was calculated according to the calculation formula. Two tests were performed. Table 3 shows the average repellency rate (%) results.
Tick repelling rate (%)
= 100 × (number of ticks climbing in untreated area - number of ticks climbing in treated area) / (number of ticks climbing in untreated area)

(Processing method of contents on cotton cloth)
The aerosol product made in Examples 1-4 or the pump product made in Comparative Example 1 was sprayed once. The aerosol products prepared in Examples 1, 3, and 4 were placed in a 1 tatami space (dimensions: 0.91 m × 1.82 m, 1.66 m ² ) and the cotton cloth 3a and cotton cloth For 3c, one injection (0.2 mL) was made from a distance of 1 m. The aerosol product produced in Example ² was applied once ( 1.0 mL) was injected. The injection angle was 30° downward with respect to the horizontal direction. The pump product prepared in Comparative Example 1 was sprayed once (1.0 mL) vertically from a height of 30 cm onto the cotton cloths 3a and 3c placed in a space of 50 cm square.
By these treatment methods, all of Examples 1 to 4 and Comparative Example 1 are treated with phenothrin to a concentration of about 12 mg/m ² per unit area.

As shown in Table 3, both the aerosol products of Examples 1 to 4 and the pump product of Comparative Example 1 were found to have a repelling effect on the test insects. For reference, when the aerosol product of Example 1 was sprayed once upward (at an angle of 30° with respect to the horizontal direction), no repelling effect was observed against the test insects. Here, referring to Tables 1 and 2 together, the aerosol products of Examples 1 to 4 have a reduced lethal effect and a sufficient repellent effect when sprayed downward toward the application site. It turned out to be Therefore, according to the aerosol products of Examples 1 to 4, it was found that the target insect pests at the application site were less likely to die, could be repelled, and insect bodies were less likely to remain at the application site. On the other hand, it was found that the pump product of Comparative Example 1 was likely to kill the target insect pests, and that there was a risk that the insect bodies would remain at the application site.

1 Petri dish 2 Black paper 3a-3d Cotton cloth 4 Black paper 5 Fresh culture medium P1-P4 Test location for test insects

Claims (3)

Injecting the aerosol composition downward from a metered injection type aerosol product filled with an aerosol composition containing a stock solution containing a component that repels crawling pests and a propellant ,
A method for repelling crawling pests, wherein the aerosol composition is sprayed so that the average particle size (D50) is 15 to 95 μm . The injection amount per time is 0.2 to 1.0 mL,
The method for repelling crawling pests according to claim 1, wherein the treatment volume is 0.2 to 1.0 mL per tatami mat. The repellent component is a pyrethroid compound,
3. The method for repelling creeping pests according to claim 1 or 2 , wherein said creeping pests are mites.

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