TWI824081B - Method for controlling insect pests and acarines, and aerosol for controlling insect pests and acarines - Google Patents

Abstract

The present invention provides a method for controlling pests and mites by only ejecting a spray for controlling pests and mites into the indoor space once, and the effect of controlling crawling pests or indoor dust mites can last for several days. The present invention is a method for controlling pests and mites by spraying a spray for controlling pests and mites. The spray for controlling pests and mites is filled with a spray liquid containing a control component and an organic solvent, and a spray agent. The spray container is made of a quantitative spray valve with a spray capacity of 1.0 to 5.0 mL each time. It is characterized by the fact that the control ingredients are non-volatile compounds with a vapor pressure of less than 1×10 ^-4 mmHg at 30°C. The spray liquid is The specific gravity is 0.85~1.15, and the spray force of the spray for pest and mite control is 10~50gf at a spray distance of 5cm.

Description

Pest and mite control methods and pest and mite control sprays

The present invention relates to a method for controlling pests and mites by spraying a spray for controlling pests and mites, and a spray for controlling pests and mites. The spray for controlling pests and mites is a spray containing a control ingredient and an organic solvent. The stock solution and the propellant are filled into a spray container equipped with a quantitative injection valve with an injection capacity of 1.0 to 5.0 mL per injection.

This is a type of insecticide that targets crawling pests such as cockroaches or house dust mites that linger on floor surfaces or walls, and is applied to places or passages where crawling pests or mites inhabit. Representative examples include (1) smoke Fumigants, (2) full-amount sprays, (3) coating sprays and (4) baits each have their own strengths in dosage forms.

(1) Fumigants or (2) Full-volume spray sprays dissipate the agent to every corner of the room at once. Since the room is sealed for a designated time, the concentration of the agent is increased, and no one can enter the room during this period, so it is equivalent to medicine. category of goods. Once these preparations are applied, they will continue to repel crawling pests or house dust mites for 2 to 4 weeks. On the other hand, the procedures before use take some time, and it is necessary to pay special attention to the safety of the preparations, etc. It is difficult to say that it is a dosage form that can be used easily and frequently.

On the other hand, (3) coating-type sprays for local surface treatment or (4) baits for spot treatment are equivalent to quasi-drugs that have a mild effect on the human body, and are similar to (1) fumigants or (4) baits. 2) Although the full-volume spray type spray is easy to use, since it is not a space treatment, the contact efficiency between the agent and pests or mites is deteriorated, and it does not necessarily provide an efficient removal method.

In this way, it has been considered difficult to develop control agents for crawling pests and house dust mites that are conventionally used for space treatment and are equivalent to quasi drugs.

However, Patent Document 1 discloses a method for expelling crawling pests, which is a method of expelling crawling pests by evaporating a pesticidal liquid containing a pesticidal component and a solvent into a space such as an indoor space or a storage space, and using a compound with a specific structure. As a solvent, in order to keep the insecticide liquid particles with small particle sizes floating in space, the insecticide liquid is evaporated little by little using a piezoelectric sprayer over time. Although the method in Patent Document 1 is like a liquid electric mosquito trap, it is proposed to repel cockroaches by continuously dispersing trace amounts of chemicals in the space for a long time. However, compared with mosquitoes, it is not only cockroaches that will kill the chemicals dozens of times more powerful. As a target, powerful insecticidal ingredients must be used, and concerns about human safety cannot be avoided.

The inventors of the present invention first developed a space treatment agent that is equivalent to a quasi-drug exterminator for crawling pests or house dust mites, and is not a repellent agent such as (1) fumigants or (2) full-volume spray sprays. The preparation is generally used once every 2 to 4 weeks, but it is a preparation that requires only one quantitative spray treatment and can last for several days under practical conditions. That is, it is basically a preparation that is used once every 1 to 2 days. , and we are working hard to develop highly safe preparations that can be used even in human conditions. As a result, an extremely useful "pest and mite control method" was invented that is effective against not only crawling pests and house dust mites, but also flying pests on the day of spraying (see Patent Document 2). However, this invention should also achieve a practical repelling effect on flying pests. As the spray characteristics of the spray, it is the formation of floating particles after spraying, the adhesion to the wall surface, etc., and the settlement to the floor surface. The spray particles are preferably designed so that 30 to 80% of the total spray particles adhere to the wall surface or settle on the floor surface one hour after the spray treatment. In addition, at the time of the invention of Patent Document 2, the injection volume of the quantitative injection valve was generally 0.2 to 0.4 mL, and it was assumed that the preparation should be processed several times (pressing of the injection button) in one time.

On the other hand, Patent Document 3 discloses a spray product for exterminating crawling pests and a method for expelling crawling pests using a fixed-meter injection valve. This aerosol product is characterized by slowing down the evaporation rate of the solvent that forms the sprayed particles from the aerosol container by increasing the blending ratio of the propellant contained in the aerosol container and reducing the vapor pressure of the solvent that dissolves the active ingredient. , in such a manner that the particles are scattered deep into the gaps in the room. That is, even if the method of Patent Document 3 is a quantitative spray treatment, it is equivalent to (3) local treatment by a coating-type spray, and is not a spatial treatment. Accordingly, even if a highly localized repellent effect is obtained in some gaps, it is not possible to efficiently repel crawling pests throughout the entire room. [Prior technical literature] [Patent Document]

[Patent Document 1] Japanese Patent Application Publication No. 2009-143868 [Patent Document 2] Japanese Patent No. 5517122 [Patent Document 3] Japanese Patent Application Publication No. 2018-12676

[Problem to be solved by the invention]

In view of this situation, based on Patent Document 2, the present inventors recognized that spatial quantitative spray treatment is the most efficient method for controlling pests and mites, and aimed to improve its convenience, especially against crawling pests and house dust mites. Conduct research on further performance improvements. First, a quantitative injection valve with an injection capacity of 1.0 to 5.0 mL developed in recent years is used to set the necessary amount of active ingredients so that it can be injected in one shot. In addition, in space treatment, in order to improve the control effect against crawling pests, especially cockroaches, the following important conclusions have been reached: only the spray particles after spraying are regarded as floating particles floating in the treatment space, and The adhesive particles attached to the exposed part in the processing space are not enough. Therefore, when comparing the spray characteristics of the adhesive particles with those of Patent Document 2, the adhesive particles are more dominant. Furthermore, among the adhesive particles, compared with the wall surface, the adhesive particles are more dominant. In addition to adhesion, it is more important to increase the ratio of adhesion particles related to settlement on the floor surface. Furthermore, the inventors found that the specific gravity of the spray stock solution and the spraying force of the spray are important factors that determine the behavior of the deposited adhesive particles. As a result of repeated trial and error experiments, the inventors found that the spray stock solution was tested The specific gravity and spray force of the spray were determined in the most appropriate range, and the present invention was finally completed.

The purpose of the present invention is to provide a spray for controlling pests and mites that only has a quantitative injection valve with a capacity of 1.0 to 5.0 mL and is injected into the indoor space at one time, and can continue to control crawling pests or house dust mites for several days. Effective pest and mite control methods and pest and mite control sprays. [Means used to solve problems]

The present invention has discovered that the following constitution exhibits excellent effects in order to achieve the above object. [1] A method for controlling pests and mites, which is a method for controlling pests and mites by spraying a spray for controlling pests and mites, and the spray for controlling pests and mites is a spray solution containing a control ingredient and an organic solvent. , and a spray agent filled in a spray container equipped with a quantitative spray valve with a spray capacity of 1.0 to 5.0 mL each time, and is characterized in that the vapor pressure of the aforementioned control component is less than 1×10 ^-4 at 30°C. mmHg of non-volatile compounds, the specific gravity of the aforesaid spray solution is 0.85 to 1.15, the spray force of the aforesaid pest and mite control spray is 10 to 50gf at a spray distance of 5cm, in the air of the indoor space during the aforesaid spray treatment , spray the original spray solution so that the release amount of the above-mentioned control ingredient becomes 0.1 to 50 mg/m ³ , and spread more than 60% of the above-mentioned control ingredient to the floor of the above-mentioned indoor space after 1 hour from spraying The entire surface and the preventive ingredients adhere to the entire surface of the floor. [2] The method for controlling pests and mites according to [1], wherein the filling amount of the spray undiluted solution of the spray for controlling pests and mites is a, and the filling amount of the propellant is b, When the specific gravity of the above-mentioned spray undiluted solution is S and the spray force of the above-mentioned pest and mite control spray is F, it is configured so that δ defined by the following formula (1) falls within the range of 1.0 to 30. , . [3] The method for controlling pests and mites according to [2], wherein the spray for controlling pests and mites is configured to satisfy the following formula (2), . [4] The method for controlling pests and mites according to [2] or [3], wherein the spray for controlling pests and mites is configured to satisfy the following formula (3), . [5] The method for controlling pests and mites as described in any one of [1] to [4], wherein the non-volatile compound is selected from the group consisting of phenothrin, cyphenothrin, and cyphenothrin. The group consisting of permethrin, permethrin, permethrin, permethrin, bifenthrin, fenpropathrin, tralomethrin, etofenprox and dinotefuran At least one compound for controlling crawling pests. [6] The method for controlling pests and mites according to any one of [1] to [4], wherein the non-volatile compound is selected from the group consisting of sulfentrafenoxabate, benzyl benzoate, phenyl salicylate, and water. Benzyl glycolate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dibutyl phthalate and p-pentane 3,8-diol At least one compound for controlling mites from the group consisting of: [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 pest and mite control method according to any one of [1] to [7], wherein the floor surface area of the indoor space is 7.5 to 26.6 m ² . [9] A spray for controlling pests and mites, which is a spray containing a spray stock solution containing a control component and an organic solvent, and a spray agent, which is filled into a quantitative spray valve with a spray capacity of 1.0 to 5.0 mL per shot. A spray for controlling pests and mites in a container, characterized in that the control ingredients are non-volatile compounds with a vapor pressure of less than 1×10 ^-4 mmHg at 30°C, and the specific gravity of the original spray solution is 0.85 to 1.15. , the spray force of the above-mentioned pest and mite control spray is 10 to 50gf at a spray distance of 5cm, and through one injection process through the above-mentioned quantitative injection valve, the release amount of the above-mentioned control ingredient in the air of the indoor space becomes When spraying the original spray solution at 0.1 to 50 mg/m ³ , more than 60% of the above-mentioned pest control ingredients are spread and adhered to the entire floor surface of the indoor space within 1 hour from spraying. [Effects of the invention]

According to the pest and mite control method and pest and mite control spray of the present invention, the specific pest and mite control spray containing non-volatile compounds is only sprayed into the indoor space at one time, and can last for several days in the treatment area. , especially the control effect that lasts for several days against crawling pests or house dust mites. It is extremely practical to provide a convenient and effective method for controlling pests and mites and a spray for controlling pests and mites.

In the present invention, a non-volatile compound having a vapor pressure of less than 1×10 ^-4 mmHg at 30°C is used as a control component. After the pest and mite control spray of the present invention is sprayed once in the indoor space, the control component mainly settles on the floor surface as adherent particles and appears in the indoor space, especially for crawling pests or house dust. Excellent control effect against sexual mites. However, in the present invention, in addition to the repellent effect, the knockdown effect or the lethal effect is also combined with the avoidance effect, which is called the prevention effect. Even if the repellent effect is low, if there is sufficient repellent effect, there are many situations where prevention can be achieved practically.

That is, the present invention is based on Patent Document 2 and recognizes that spatial quantitative spray treatment is the most efficient method for controlling pests and mites, and aims to improve its convenience, especially for crawling pests or indoor dust mites. performance enhancer. First, a quantitative injection valve with an injection capacity of 1.0 to 5.0 mL developed in recent years is used to set the necessary amount of active ingredients so that it can be injected in one shot. In addition, in space treatment, in order to improve the control effect against crawling pests, especially cockroaches, the important directionality is to improve the floating particles and adherent particles formed from the spray particles after spraying. This is achieved by increasing the predominance of adhesive particles and, in turn, increasing the rate of settlement on the floor surface compared to adhesion to walls, etc. among adhesive particles. Furthermore, since the adhesive particles of the present invention also enter gaps or shadows in the process of settling, when a pyrethroid compound is used as a control component, the flashing of cockroaches and the like flying out of gaps or shadows can be fully expected. )Effect.

As the non-volatile control ingredient used in the present invention, a crawling pest control compound mainly used to control crawling pests represented by cockroaches, and/or a mite control compound mainly used to control house dust mites can be used. Use compounds. Examples of the compound for controlling crawling pests include phenothrin, phenothrin, phenothrin, phenothrin, thifenin, thifenin, phefenin, fenpronin, tyfenin, imiprothrin and imiprothrin. Pyrethroid compounds such as ), silicon compounds such as silafluofen, organophosphorus compounds such as dichlorvos and fenitrothion, and carbamates such as propoxur Nicotine (neonicotinoid) compounds, such as dartnam, datamide, and canidine, and others are fenpronil, indoxacarb, etc. Among these, preferred are phenfenin, thiefenin, perfenin, thiefenin, thiefenin, bifenin, fenpunin, tifenin, efenin and datnam. Furthermore, when the acid component or alcohol part of the pyrethroid compound has optical isomers or geometric isomers based on the absence of carbon atoms, these individual or arbitrary mixtures are of course also included in this document. invention.

Examples of compounds for controlling mites include amidoflumet, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, and adipic acid. Dibutyl ester, diethyl phthalate, dipropyl phthalate, dibutyl phthalate, p-pentane 3,8-diol, 3-iodo-2-propynylbutylaminomethyl Acid esters, fenfenzofen and DEET, etc., but suitable ones include sulfamethoxazole, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, and sebacic acid. Dipropyl ester, dibutyl adipate, diethyl phthalate, dibutyl phthalate, p-pentane 3,8-diol, fenbutyric acid and ethidium.

The pest and mite control method of the present invention involves spraying a small amount of a spray solution containing control ingredients and an organic solvent into a certain space. The content of control ingredients in the original spray solution is preferably about 1.0 to 70w/v%. If the content of the control ingredient in the original spray solution is less than 1.0 w/v%, the desired control effect will not be obtained. If it exceeds 70 w/v%, it will be difficult to stabilize the liquid properties of the original spray solution.

In the present invention, in addition to the above-mentioned non-volatile control components, after the space spray treatment, the spray particles will float and remain in the air to a certain extent, so that the control effect can also be exerted on flying pests. The vapor pressure at 30°C can be added It is a volatile control ingredient at room temperature with a range of 2×10 ^-4 mmHg or more and less than 1×10 ^-2 mmHg. Examples of the room-temperature volatile control component include metofluthrin, profluthrin, transfluthrin, dexfenthrin, cyclopentethrin, and furethrin. It is believed that when room temperature volatile control ingredients and non-volatile control ingredients are attached to a part of the floor surface or wall surface, the control effect against crawling pests and/or house dust mites can be synergistically improved. Still, when considering vapor pressure, stability, basic insecticidal efficacy, etc. among room temperature volatile control ingredients, the preferred ones are metofluthrin, profluthrin, and transfluthrin. Among these, When the acid component or alcohol part of a compound exists as optical isomers or geometric isomers based on the absence of carbon atoms, these individual or arbitrary mixtures are naturally included in the present invention.

In the present invention, in order to dissolve the above-mentioned non-volatile pest control components, an organic solvent is blended to form a spray stock solution. Examples of the organic solvent include lower alcohols having 2 to 3 carbon atoms, hydrocarbon-based solvents such as n-alkanes or iso-alkanes, ester-based solvents such as isopropyl myristate (IPM) or hexyl laurate, carbon Glycol ether solvents, ketone solvents, etc. with a number of 3 to 10 are preferred, but lower alcohols with a carbon number of 2 to 3 represented by ethanol or isopropyl alcohol (IPA) are preferred.

The pest and mite control method of the present invention is to use a pest and mite control spray containing non-volatile control components, and set the spray volume at 1.0 to 5.0 mL each time, and perform spray treatment in the indoor space. It can last for several days in the treated area, and is especially effective against crawling pests or house dust mites. The size of the indoor space is preferably 18.8 to 33.3m ³ (area 7.5 to 13.3m ² , height 2.2 to 3.0m) equivalent to the volume of a room with 4.5 to 8 tatami mats.

Although the spray particles after spraying can be formed as floating particles floating in the processing space, or as adhesive particles attached to the exposed parts in the processing space, the inventors have made the adhesive particles more dominant, and further, Among the adhesive particles, a study was conducted to increase the ratio of the adhesive particles that settle on the floor surface compared to those that adhere to the wall surface. As a result, the present inventors found that the specific gravity of the aerosol undiluted solution and the ejection force of the aerosol are important factors in determining the behavior of the deposited adherent particles, and finally determined the optimum range for these. That is, if the specific gravity of the spray liquid is 0.85 to 1.15, preferably 0.89 to 1.10, and the spray force of the spray treatment is 10 to 50 gf, preferably 15 to 35 gf at a spray distance of 5 cm, then it can be confirmed that the time from spraying to 1 hour Afterwards, more than 60% of the control ingredients are deposited and adhered through the entire floor surface, thereby exerting excellent control effects against crawling pests and mites. However, regarding the prevention component as "sedimentation and adhesion through the entire floor surface", it is not necessary to confirm every time whether the prevention component actually settles and adheres through the entire floor surface. If the spray is in the treatment space, the method of the present invention is If spraying is carried out in an interesting manner, even if there is some distribution or deviation in the settlement and adhesion state of the sprayed control component on the floor surface, it can be regarded as the control component settling and adhering through the entire floor surface, so it can be regarded as practical There is no difference. When the specific gravity of the original spray solution is less than 0.85, there is a tendency for insufficient adhesion of the spray particles to the floor surface. When the specific gravity of the original spray solution exceeds 1.15, the settling of the spray particles becomes too rapid, and the diffusivity to the entire floor surface is reduced. Not enough. In addition, when the spraying force of the spraying process is less than 10gf, the spraying force is insufficient and the diffusivity to the entire floor surface tends to be insufficient. Even if the spraying force exceeds 50gf, good diffusivity cannot be obtained. Furthermore, the spray force of the spray can be appropriately adjusted by changing the formula of the spray solution, the internal pressure of the spray, the shape of the nozzle, etc.

Furthermore, the spray for controlling pests and mites is preferably such that the filling amount of the spray undiluted solution is denoted as a, the filling amount of the propellant is denoted as b, the specific gravity of the spray undiluted solution is denoted S, and the spray for controlling pests and mites is preferably When the ejection force of the agent is F, it is configured so that δ defined by the following formula (1) falls within the range of 1.0 to 30, More preferably, it is in the range of 3.0 to 15.

If δ is in the range of 1.0 to 30, when the spray particles settle, a sufficient amount of the control ingredient will be uniformly spread to the entire floor surface, thereby obtaining a better control effect. This is thought to be because the control ingredients spread uniformly over the entire floor surface, and the initial speed of the spray particles from the pest and mite control spray to the spray is appropriate. After spraying, the spray particles quickly spread to every corner of the indoor space. When δ is less than 1.0, the amount of adhesion of the prevention component to the floor surface may be insufficient. On the other hand, when δ exceeds 30, the diffusivity to the entire floor surface may become insufficient. Therefore, when δ deviates from the range of 1.0 to 30, there is a risk that a satisfactory control effect cannot be exerted.

The spray for controlling pests and mites is preferably a volume ratio [a/(a+b)] of the filling amount a of the original spray solution to the full capacity (a+b) of the spray for controlling pests and mites [a/(a+b)], which satisfies the following Formula (2): . If the capacity ratio is within the above range, a sufficient amount of the anti-repellent component will be spread uniformly over the entire floor surface. When the capacity ratio is smaller than 0.1 and there is too much propellant, the adhesion amount of the control component to the floor surface will be insufficient. On the other hand, when the volume ratio exceeds 0.5, the spray particles settle too quickly and the diffusivity to the entire floor surface becomes insufficient.

Since the pest and mite control spray used in the present invention is sprayed in a small amount, there is no need to pay attention to the risk of fire. However, from the perspective of reducing the risk of fire as much as possible, a water-based formulation can also be used. In this case, the amount of water contained in the original solution of the spray is about 20 to 70 v/v%. In the range that does not affect the spraying method of the spray particles, some amount of non-ionic system can be added as a solubilization aid. Surfactants. Examples of nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene alkyl amino ethers, and the like. Ethers, polyethylene glycol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene glycerol fatty acid esters and other fatty acid esters, polyoxyethylene styrenated phenols, polyalkyl alcohols of fatty acids Amines, etc., among which ethers are suitable.

In addition to the above ingredients, the spray solution may also be appropriately blended with antifungal agents, antibacterial agents, or bactericides that target molds, fungi, etc., or aromatics, deodorants, stabilizers, antistatic agents, and disinfectants. Foaming agents, excipients, etc. Examples of the antifungal agent, antibacterial agent, or bactericide include hinokitiol, 2-mercaptobenzothiazole, 2-(4-thiazolyl)benzimidazole, and 5-chloro-2-methyl-4-isothiazoline- 3-Keto, Triforine, 3-methyl-4-isopropylphenol, o-phenylphenol, etc. Furthermore, examples of the aromatic agent include orange oil, lemon oil, lavender oil, peppermint oil, eucalyptus oil, citronella oil, lime oil, grapefruit oil, jasmine oil, cypress oil, green tea essential oil, limonene, and α-pinene. , aromatic components such as linalool, geraniol, phenylethyl alcohol, amyl cinnamyl aldehyde, cuminaldehyde, benzyl acetate, etc., chlorophyllol or chlorophyllaldehyde, which is known as the "green fragrance" Blended fragrance ingredients, etc., but are not limited to these.

Examples of the propellant used in the present invention include liquefied petroleum gas (LPG), liquefied gases such as dimethyl ether or hydrofluorocarbon, and compressed gases such as nitrogen gas, carbonic acid gas, nitrogen oxide, and compressed air. , one or more of them can be appropriately used. The propellant should be appropriately determined by considering the adhesion rate of the spray particles to the floor surface or wall, and it is usually easy to use one containing LPG as the main body. Furthermore, it is preferable to use the propellant with the gauge pressure (20°C) adjusted to 0.1 to 0.7MPa.

The above-mentioned pest and mite control sprays are equipped with a quantitative spray valve with a spray capacity of 1.0 to 5.0 mL each time, and are used for spraying a certain amount in the house. Conventionally, the injection capacity of a quantitative injection valve is 0.2 to 0.4 mL. However, in the quantitative injection valve used in the present invention, as the capacity increases, the necessary amount of active ingredient can be injected at one time. In addition, the shape of the spout, nozzle, container, etc. can be appropriately selected according to its use, purpose of use, etc. For example, it can be designed as a desktop type with a button that is pressed from above to spray and a nozzle that tilts upward, or it can be designed as a portable container.

In the method for controlling pests and mites of the present invention, by using the spray for controlling pests and mites thus obtained, the volume of each spray is set to 1.0 to 5.0 mL, preferably 1.0 to 3.0 mL. The indoor space is sprayed into the air, and the release amount of the control component in the air is 0.1 to 50 mg/m ³ , preferably 0.5 to 50 mg/m ³ . When spraying an indoor space with a volume of 18.8 to 33.3m ³ (area 7.5 to 13.3m ² , height 2.2 to 3.0m) equivalent to a room with 4.5 to 8 tatami mats, the spray solution is usually sprayed once. Although the release amount of the control ingredient in the air is 0.1 to 50 mg/m ³ , in a larger indoor space, depending on the volume of the indoor space, the release amount of the control ingredient in the air becomes By spraying the original spray solution several times at 0.1 to 50mg/ ^m3 , the same control effect can be obtained regardless of the size of the indoor space. For example, when spraying is performed in an indoor space with a volume of 37.6 to 66.6m ³ (area 15 to 26.6m ² , height 2.2 to 3.0m) equivalent to a room with 9 to 16 tatami mats, the spray solution is sprayed twice , the amount of release of control components in the air is 0.1 to 50 mg/m ³ . The frequency of use of the spray for controlling pests and mites is basically once every 1 to 2 days, and the spray is applied so that the release amount of the pest control ingredient falls within the above-mentioned range. This can effectively control crawling pests and/or house dust. The mite control effect lasts for several days. Furthermore, by using together a control component that is volatile at room temperature, it is possible to provide a control effect against flying pests.

The pest and mite control method of the present invention is particularly effective against cockroaches, ants, bed bugs, tropical bed bugs, such as cockroaches, cockroaches such as Blattella germanica, American cockroach, and brown cockroach, bedbugs such as burrito, corn weevil, and carcass-eating bugs. It is effective in controlling crawling pests such as worms, rat mites, and rat mites, as well as house dust mites such as putrefactive typhoid mites, American pteronyssinus, house dust mites, and spider mites. However, it is not limited to these crawling pests and mites, which fly indoors and cause harm or discomfort to humans. For example, it is also fully applicable to mosquitoes such as Culex pipiens, Aedes albopictus, and chironomid. Controller for various pests such as mosquitoes, house flies, white-spotted moths, gnats, flies, bees, leafhoppers, etc. [Example]

Based on specific embodiments and test examples, the method for controlling pests and mites and the spray for controlling pests and mites of the present invention will be described in more detail. However, the present invention is not limited to these.

[Example 1] Dissolve 53w/v% of fenbutenine and 0.7w/v% of methofluthrin in ethanol to prepare a spray stock solution. 12 mL of the spray undiluted liquid (a) and 18 mL of liquefied petroleum gas (b) as the propellant were filled under pressure in the attached spray tank so that the volume ratio [a/(a+b)] of the aerosol undiluted liquid became 0.4. A spray container (pressure-resistant container) with a quantitative spray valve with a capacity of 1.0 mL was used to obtain the pest and mite control spray of Example 1. The specific gravity of the original spray solution is 0.93, and the spray force of this spray at a spray distance of 5cm is 26gf. Also, δ is 9.0.

In the center of a nearly airtight room with a volume of 25 m ³ (equivalent to an area of 10 m ² in a room with 6 tatami mats), spray the pest and mite control spray by slightly tilting it upward and clicking it. The adhesion rate (%) of the control component to the floor surface was calculated from the analysis results by gas chromatography described below and the release amount of the control component from the spray. As a result, it was confirmed that 72% of the total spray particles sprayed by this spray treatment (that is, 72% of the release amount of the control component) settled and adhered through the entire floor surface 1 hour after the spray treatment. Furthermore, within a few days of spray treatment, it has an excellent control effect against crawling pests such as cockroaches, ants, and carcass-eating insects, and does not accumulate dust mites in the house. Also, when the spray treatment is carried out by spraying the pest and mite control spray twice upward at a slight angle in the center of a nearly airtight room with a volume of 50 m ³ (equivalent to an area of 20 m ² in a room with 12 tatami mats), Similar to the case of a room with a volume of ^25m3 , the effect of controlling crawling pests can also be confirmed.

[Examples 2 to 24, Comparative Examples 1 to 4] Various pest and mite control sprays shown in Table 1 were prepared according to Example 1. Furthermore, in the sprays for controlling pests and mites in Examples 2 to 21, 23 to 24, and Comparative Examples 1 and 3 to 4, a spray container with a quantitative spray valve with a spray capacity of 1.0 mL was used, and in Example 22 The spray for controlling pests and mites uses a spray container with a fixed spray valve with a spray capacity of 2.2 mL. The spray for controlling pests and mites in Comparative Example 2 uses a spray with a fixed spray valve with a spray capacity of 0.4 mL. agent container.

The following tests were performed using the pest and mite control sprays of Examples 1 to 24 and Comparative Examples 1 to 4. For indoor dust mites, first investigate the repellent effect. If the repellent effect is lacking, evaluate the repellent effect. The test results are collectively shown in Table 2.

(1) For the repelling effect of crawling pests, a total of 12 20×20cm glass plates (4 each for German cockroach, American housefly and Japanese mountain ant) were installed in a room with a closed volume of ^25m3 (area ^10m2 ), place a plastic ring with a diameter of about 20cm on each glass plate, and put the designated test insects into each ring (Permanic cockroach: 5 adults, American cockroach: 5 larvae, Japanese mountain cockroach) ants: 5) allowing them to roam freely. Click the test spray in the center of the room slightly tilted upwards (spray capacity: Examples 1 to 21, 23 to 24, Comparative Examples 1, 3 to 4 1.0mL, Example 22 2.2mL, Comparative Example 2 0.4 mL) spray. After being exposed to the agent for 24 hours, the glass plate and each ring containing the test insect were transferred to another room and baited, and the lethality rate of the test insect was determined after 24 hours.

(2) Regarding the repelling effect of house dust mites, eight waist-high petri dishes with a diameter of 9 cm and a height of 6 cm (4 each for American pteronyssinus and Tyrophagus putrugans) were installed in a room with a closed volume of 25 m ³ (area 10 m ² ) Place about 200 designated test mites in each of the four corners of the waist-height petri dish for testing. Place the test spray in the center of the room and spray it slightly upwards with a single click. After being exposed to the agent for 24 hours, determine the mortality rate of the test mites.

(3) Repellent effect on house dust mites In the above "(2) Repelling effect of house dust mites" test, instead of the test mites, place cotton cloths with a diameter of about 4cm in the four corners of the room, and spray the test spray with one click. Take out the cotton cloth 24 hours after the injection, insert it into a 4cm diameter petri dish, and place 50mg of induction medium in the center of the petri dish. Different from the 9cm diameter Petri dish, about 10,000 American dust mites or Tyrophagus putrugans were placed together with the culture medium, and in the center of this 9cm diameter Petri dish, a previously prepared 4cm diameter Petri dish was placed. Likewise, prepare an untreated area using cotton cloth that has not been treated with the test spray. After 24 hours, count the number of mites invaded on the cotton cloth, and calculate the mite avoidance rate according to the following formula. Mite avoidance rate (%) = [(Number of invasive mites in the untreated area - Number of invasive mites in the treated area)/Number of invasive mites in the untreated area] × 100

(4) Floor surface adhesion rate of anti-repellent ingredients At 6 to 8 points on the floor surface of a room with a closed volume of 25 m ³ (area 10 m ² ), place 20 × 20 cm glass plates evenly throughout the room, and apply the test spray to The center of the room is slightly tilted upwards to spray with a single click. One hour after the spray treatment, all glass plates were taken out, and the adhering prevention components were washed out with acetone and analyzed by gas chromatography. Based on the obtained analytical values, one hour after the spray treatment, the ratio of the anti-pesticide component that settled and adhered to the floor surface to the theoretical total sprayed amount of the anti-pesticide component (floor surface adhesion rate) was calculated. In addition, we analyze the unevenness among the glass plates in terms of the anti-repellent components attached to the glass plates, and evaluate the diffusion uniformity of the spray particles. The results are expressed in four stages: A, B, C, and D in order from those with good diffusion uniformity.

As a result of the test, according to the pest and mite control method of the present invention using the pest and mite control sprays of Examples 1 to 24, it was confirmed that the spray particles spread to the entire floor surface almost uniformly, and that one hour after spraying, the control ingredients More than 60% settles and adheres to the floor surface. Furthermore, when the pest and mite control sprays of Examples 1 to 16 and 20 to 24 blended with compounds for controlling crawling pests are used as non-volatile control components, it is confirmed that the pests and house dust mites are effectively controlled All of them have excellent control effects. When the insect pest and mite control sprays of Examples 17 to 19 blended with the mite control compounds were used as non-volatile control components, it was confirmed that they exhibited excellent control effects against house dust mites.

In contrast, in Comparative Examples 1 to 4, sufficient control effects were not obtained against any of crawling pests and house dust mites. In Comparative Example 1, it is considered that the use of a spray containing only a room-temperature volatile pyrethrin compound such as dextromethrin as a control ingredient reduced the adhesion rate to the floor surface and, as a result, reduced the control effect. In Comparative Example 2, it is considered that because a quantitative injection valve with an injection capacity of 0.4 mL was used and the injection was carried out at one time, the sprayed control component did not reach the necessary amount, and as a result, the control effect was reduced. As in Comparative Example 3 or Comparative Example 4, if the specific gravity of the spray solution deviates from the range of 0.85 to 1.15 specified in the present invention, the diffusion uniformity of the spray particles is low, which is considered to be the reason for the reduction in the control effect. [Industrial availability]

The method for controlling pests and mites and the spray for controlling pests and mites of the present invention are not limited to indoor use, but can also be used for the purpose of controlling a wide range of pests and mites.

Claims (9)

A method of using a spray for controlling pests and mites, which is to fill a spray with a quantitative spray valve with a spray capacity of 1.0 to 5.0 mL each time using a spray stock solution containing a control component and an organic solvent, and a spray agent. A method of using a spray for controlling pests and mites in a container, which is characterized in that the aforementioned control ingredients are non-volatile compounds with a vapor pressure of less than 1×10 ^-4 mmHg at 30°C, and the specific gravity of the original spray solution is 0.85~1.15. The spray force of the above-mentioned pest and mite control spray is 10~50gf at a spray distance of 5cm. Through one-time spray treatment through the above-mentioned quantitative injection valve, the above-mentioned control ingredients are released in the air of the indoor space. When the spray liquid is sprayed so that the output is 0.1~50 mg/ ^m3 , more than 60% of the above-mentioned anti-repellent ingredients are spread and adhered to the entire floor surface of the indoor space within one hour from spraying. For example, the method of using the spray for controlling pests and mites in claim 1, wherein the filling amount of the spray for controlling pests and mites is a, and the filling amount of the propellant is b, When the specific gravity of the above-mentioned spray undiluted solution is S and the spray force of the above-mentioned pest and mite control spray is F, it is configured so that δ defined by the following formula (1) falls within the range of 1.0 to 30. , δ=[a/(a+b)]×S ² ×F． ． ． (1). Such as the use of sprays for pest and mite control as requested in item 2 Method of use, wherein the aforementioned spray for controlling pests and mites is constituted to satisfy the following formula (2), 0.1≦[a/(a+b)]≦0.5. ． ． (2). For example, the method of using a spray for controlling pests and mites according to claim 2 or 3, wherein the spray for controlling pests and mites is composed in a manner that satisfies the following formula (3), 3.0≦δ≦15. ． ． (3). For example, the method of using a spray for controlling pests and mites according to any one of claims 1 to 3, wherein the aforementioned non-volatile compound is selected from the group consisting of phenothrin, cyphenothrin, and cyphenothrin. In the group consisting of (permethrin), sulfenin, sulfenin, bifenthrin, fenpropathrin, tralomethrin, etofenprox and dinotefuran At least one compound for controlling crawling pests. Such as the method of using a spray for controlling pests and mites in any one of claims 1 to 3, wherein the aforementioned non-volatile compound is selected from the group consisting of amidoflumet, benzyl benzoate, phenyl salicylate, Benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dibutyl phthalate and p-pentane 3,8-di At least one compound for controlling mites from the group consisting of alcohols. For example, the method of using the spray for controlling pests and mites according to any one of claims 1 to 3, wherein the aforementioned organic solvent is a lower alcohol with a carbon number of 2 to 3. For example, the method of using the spray for controlling pests and mites according to any one of claims 1 to 3, wherein the floor surface area of the aforementioned indoor space is 7.5 to 26.6 m ² . A spray for controlling pests and mites, which is prepared by filling a spray container with a quantitative spray valve with a spray capacity of 1.0 to 5.0 mL each time, and a spray liquid containing a control component and an organic solvent, and a spray agent. A spray for controlling pests and mites is characterized in that the aforementioned control ingredients are non-volatile compounds with a vapor pressure of less than 1×10 ^-4 mmHg at 30°C, and the aforementioned non-volatile compounds are selected from the group consisting of fenbutyrazolin ( At least one of the group consisting of phenothrin, cyphenothrin, permethrin, tralomethrin, benzyl benzoate and dibutyl sebacate, the aforementioned spray stock solution The content of the control ingredients is 1.0~70w/v%, the specific gravity of the aforesaid spray solution is 0.85~1.15, the spray force of the aforesaid pest and mite control spray is 10~50gf at a spraying distance of 5cm, by spraying through the aforesaid quantitative The primary spray treatment of the valve is to spray the aforementioned spray liquid in the air of the indoor space in such a way that the release amount of the aforementioned prevention component becomes 0.1~50mg/ ^m3 , and 1 hour after the spraying, the aforementioned prevention More than 60% of the ingredients diffuse and adhere to the entire floor surface of the aforementioned indoor space.