Method for controlling insect pest and mite, and aerosol for controlling insect pest and mite

Abstract

To provide a method for controlling insect pests and mites capable of lasting control effect on creeping insect pests and house dust mites for several days only by performing one push of an aerosol for controlling insect pests and mites in an indoor space.SOLUTION: There is provided a method for controlling insect pests and mites which performs injection treatment using an aerosol for controlling insect pests and mites obtained by filling an aerosol source liquid containing a control component and an organic solvent as well as a propellant in an aerosol vessel provided with a quantitative injection valve whose injection volume for one time is 1.0 to 5.0 mL. A control component is a compound of extremely low volatility having a vapor pressure of less than 1×10-4 mmHg at 30°C, and an aerosol source liquid has a specific gravity of 0.85 to 1.15 and the injection force of the aerosol for controlling insect pests and mites at an injection distance of 5 cm is 10 to 50 gf.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a method for controlling pests and mites, which involves spraying an aerosol for controlling pests and mites, the aerosol comprising an aerosol concentrate containing a control ingredient and an organic solvent, and a propellant, filled in an aerosol container equipped with a metered-dose spray valve with a single spray volume of 1.0 to 5.0 mL, and to an aerosol for controlling pests and mites. [Background technology]

[0002] Representative types of insecticides that target crawling pests such as cockroaches that roam floors and walls, and house dust mites, and that are applied to places where crawling pests and mites live or along their paths, include (1) fumigants, (2) total-volume spray aerosols, (3) paint-on aerosols, and (4) baits, each of which has its own unique formulation.

[0003] (1) Fumigants and (2) total-discharge aerosols fall into the category of pharmaceuticals, as they disperse the agent to every corner of a room in one go, seal the room for a specified period of time to increase the agent concentration, and prevent people from entering the room during that time. Although these preparations are effective against crawling pests and house dust mites for 2 to 4 weeks after application, they are difficult to say are formulations that can be easily and frequently adopted, as the procedures before use are time-consuming and special attention must be paid to the safety of the agent.

[0004] On the other hand, (3) aerosol paints for localized surface application and (4) baits for spot application are quasi-drugs with mild effects on the human body and are easier to use than (1) fumigants and (2) total-amount spray aerosols. However, since they are not spatial applications, the contact efficiency between the agents and pests or mites is inferior, and they do not necessarily provide an efficient extermination method.

[0005] Thus, it has been considered difficult to develop a control agent for crawling pests or indoor dust mites that can be classified as a quasi-drug while still being a spatial treatment.

[0006] Incidentally, Patent Document 1 discloses a method for exterminating crawling pests by evaporating an insecticidal liquid containing an insecticidal component and a solvent into a space such as an indoor space or a storage space, in which a compound having a specific structure is used as the solvent, and the insecticidal liquid is evaporated little by little over time by a piezoelectric sprayer so that small particles of the insecticidal liquid are kept suspended in the space. The method of Patent Document 1 proposes to exterminate cockroaches by continuously emitting a small amount of chemical into the space for a long period of time, like a liquid electric mosquito repellent, but since the target is cockroaches, which are several tens of times more resistant to chemicals than mosquitoes, a strong insecticidal component must be used, and concerns about safety to the human body cannot be avoided.

[0007] The present inventors previously conducted intensive research to develop a spatial treatment agent for crawling pests and house dust mites that corresponds to a quasi-drug, which is not a preparation that is used once every 2 to 4 weeks such as (1) a fumigation agent or (2) a total-amount spray type aerosol, but a preparation that can be sprayed once in a fixed amount and has a control effect that lasts for several days under practical conditions, i.e., a preparation that is basically used once every 1 to 2 days, and is highly safe and can be used even in situations where people are present. As a result, they invented a very useful "pest and mite control method" (see Patent Document 2), which is effective not only against crawling pests and house dust mites, but also against flying pests on the day of spraying. In addition, in order to achieve a practical extermination effect against flying pests, this invention is designed so that the sprayed particles after spraying are formed into floating particles and adhesive particles that adhere to walls and settle on floors, and preferably 30-80% of the total sprayed particles adhere to walls or settle on floors within one hour after spraying. At the time of the invention of Patent Document 2, the spray volume of a metered dose spray valve was generally 0.2-0.4 mL, and the formulation was basically pushed (the spray button was pressed) several times in one treatment.

[0008] On the other hand, Patent Document 3 discloses an aerosol product for exterminating crawling pests using a constant-dose injection valve and a method for exterminating crawling pests. This aerosol product is characterized in that the mixing ratio of the propellant contained in the aerosol container is increased, the vapor pressure of the solvent that dissolves the active ingredient is lowered, and the evaporation rate of the solvent that forms the particles sprayed from the aerosol container is slowed down so that the particles are scattered deep into gaps in the room. In other words, even though the method of Patent Document 3 is a constant-dose injection treatment, it falls under (3) local treatment by aerosol coating, and does not fall under spatial treatment. Therefore, even if a high extermination effect is obtained locally in some gaps, it does not mean that crawling pests can be efficiently exterminated throughout the entire room. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] JP 2009-143868 A [Patent Document 2] Patent No. 5517122 [Patent Document 3] JP 2018-12676 A Summary of the Invention [Problem to be solved by the invention]

[0010] In view of this situation, the present inventors, based on the recognition that the spatial fixed-amount spray treatment based on Patent Document 2 is the most efficient method for controlling pests and mites, have conducted research aimed at improving its convenience and further improving its efficacy, especially against crawling pests and indoor dust mites. First, a fixed-amount spray valve with a spray volume of 1.0 to 5.0 mL, which has been developed in recent years, is adopted, making it possible to spray the required amount of active ingredient with one push. In addition, in order to improve the control effect against crawling pests, especially cockroaches, in spatial treatment, it is not enough to simply form the spray particles after spraying as floating particles floating in the treatment space and adhesive particles adhering to exposed parts in the treatment space, but it is essential to make the adhesive particles more dominant compared to the spray characteristics of Patent Document 2, and further to increase the ratio of adhesive particles involved in settling on the floor surface rather than adhering to walls and the like. The inventors then discovered that the specific gravity of the aerosol concentrate and the aerosol propelling force are important factors that determine the behavior of adhesive particles related to sedimentation, and after repeated trial and error and testing, they were able to identify the optimal ranges for the specific gravity of the aerosol concentrate and the aerosol propelling force, thereby completing the present invention.

[0011] An object of the present invention is to provide a method for controlling pests and mites, and an aerosol for controlling pests and mites, which can maintain a control effect against crawling pests and indoor dust mites for several days by simply pushing an aerosol for controlling pests and mites equipped with a metered-dose valve with a capacity of 1.0 to 5.0 mL in an indoor space once. [Means for solving the problem]

[0012] The present invention has discovered that the following configurations are highly effective in achieving the above-mentioned object. [1] A method for controlling pests and mites, comprising filling an aerosol concentrate containing a control ingredient and an organic solvent, and a propellant, into an aerosol container equipped with a metered-volume spray valve with a spray volume of 1.0 to 5.0 mL per spray, and using the aerosol for controlling pests and mites, The control ingredient has a vapor pressure of 1×10 at 30° C. -4It is a hardly volatile compound with a vapor density of less than mmHg. The specific gravity of the aerosol concentrate is 0.85 to 1.15; The spray force of the pest and mite control aerosol is 10 to 50 gf at a spray distance of 5 cm; In the spray treatment, the amount of the control component released into the air of the indoor space is 0.1 to 50 mg / m 3 and within one hour after spraying, 60% or more of the control ingredient is dispersed and adhered to the entire floor surface of the indoor space. [2] The pest and mite control aerosol has a filling amount of the aerosol concentrate of a, a filling amount of the propellant of b, a specific gravity of the aerosol concentrate of S, and a spray force of the pest and mite control aerosol of F, which satisfies the following formula (1): δ = [a / (a+b)] × S 2 × F ··· (1) The method for controlling insects and mites according to [1], wherein δ defined as above is in the range of 1.0 to 30. [3] The aerosol for controlling pests and mites is represented by the following formula (2): 0.1 ≦ [a / (a+b)] ≦ 0.5 (2) The method for controlling pests and mites according to [2] above, which is configured to satisfy the above requirements. [4] The aerosol for controlling pests and mites is represented by 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 method for controlling insects and mites according to any one of [1] to [4], wherein the hardly volatile compound is at least one compound for controlling crawling insects selected from the group consisting of fenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropathrin, tralomethrin, etofenprox, and dinotefuran. [6] The method for controlling insects and mites according to any one of [1] to [4], wherein the hardly volatile compound is at least one mite control compound 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-menthane-3,8-diol. [7] The method for controlling insects 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 floor area of ​​the indoor space is 7.5 to 26.6 m 2 The method for controlling insects and mites according to any one of [1] to [7], [9] An aerosol for controlling pests and mites, comprising an aerosol concentrate containing a control component and an organic solvent, and a propellant, filled in an aerosol container equipped with a metered-dose injection valve with a single injection volume of 1.0 to 5.0 mL, The control ingredient has a vapor pressure of 1×10 at 30° C. -4 It is a hardly volatile compound with a vapor density of less than mmHg. The specific gravity of the aerosol concentrate is 0.85 to 1.15; The spray force of the pest and mite control aerosol is 10 to 50 gf at a spray distance of 5 cm; The amount of the control component released into the air of an indoor space by one spray treatment through the metered spray valve is 0.1 to 50 mg / m 3 When the aerosol concentrate is sprayed so as to satisfy the above requirements, 60% or more of the control ingredient will diffuse and adhere to the entire floor surface of the indoor space within one hour after spraying. Effect of the Invention

[0013] According to the method for controlling pests and mites and the aerosol for controlling pests and mites of the present invention, by simply spraying a specific aerosol for controlling pests and mites containing a hardly volatile compound with a single push in an indoor space, the control effect against crawling pests and indoor dust mites in the treated area can be sustained for several days. Since a convenient and effective method for controlling pests and mites and an aerosol for controlling pests and mites are provided, they are extremely practical. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] In the present invention, the control ingredient is a compound having a vapor pressure of 1×10 at 30° C. -4 A hardly volatile compound with a vapor pressure of less than mmHg is used. After the pest and mite control aerosol of the present invention is sprayed in an indoor space with one push, the control component mainly settles on the floor surface as adhesive particles, and shows excellent control effect against crawling pests and indoor dust mites in the indoor space. In the present invention, the control effect includes the control effect based on the knockdown effect and the lethal effect, as well as the repellent effect. Even if the control effect is low, there are many situations where control can be achieved in practice as long as there is a sufficient repellent effect.

[0015] That is, the present invention aims to improve the convenience of the spatial fixed-amount spray treatment based on Patent Document 2, based on the recognition that it is the most efficient method for controlling pests and mites, and to further improve its efficacy, particularly against crawling pests and indoor dust mites. First, a fixed-amount spray valve with a capacity of 1.0 to 5.0 mL, which has been developed in recent years, is adopted, making it possible to spray the required amount of active ingredient with one push. In addition, in order to improve the control effect against crawling pests, especially cockroaches, in spatial treatment, it is essential to increase the dominance of adhesive particles among the floating particles and adhesive particles formed from the spray particles after spraying, and further to increase the ratio of adhesive particles that settle on the floor surface rather than adhering to walls, etc., which has been achieved based on the directionality. In addition, since the adhesive particles of the present invention also enter gaps and shadows in the process of settling, when a pyrethroid compound is used as a control ingredient, a flushing effect in which cockroaches and the like jump out of gaps and shadows can be fully expected.

[0016] The hardly volatile control component used in the present invention may be a compound for controlling crawling pests, mainly for controlling crawling pests such as cockroaches, and / or a compound for controlling mites, mainly for controlling indoor dust mites. Examples of the compound for controlling crawling pests include pyrethroid compounds such as fenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropathrin, tralomethrin, etofenprox, and imiprothrin, silicon compounds such as silafluofen, organophosphorus compounds such as dichlorvos and fenitrothion, carbamate compounds such as propoxur, neonicotinoid compounds such as dinotefuran, imidacloprid, and clothianidin, and other compounds such as fipronil and indoxacarb. Among these, fenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropathrin, tralomethrin, etofenprox, and dinotefuran are preferred. When optical isomers or geometric isomers based on asymmetric carbons exist in the acid component or alcohol moiety of the pyrethroid compound, each of these isomers and any mixture thereof are of course encompassed in the present invention.

[0017] Examples of the mite control compound include amidoflumet, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dipropyl phthalate, dibutyl phthalate, p-menthane-3,8-diol, 3-iodo-2-propynyl butylcarbamate, fenothrin, and DEET, with amidoflumet, benzyl benzoate, phenyl salicylate, benzyl salicylate, dibutyl sebacate, dipropyl sebacate, dibutyl adipate, diethyl phthalate, dibutyl phthalate, p-menthane-3,8-diol, fenothrin, and DEET being preferred.

[0018] In the method for controlling pests and mites of the present invention, a small amount of aerosol concentrate containing a control component and an organic solvent is sprayed into space. The content of the control component in the aerosol concentrate is preferably about 1.0 to 70 w / v%. If the content of the control component in the aerosol concentrate 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 concentrate.

[0019] In the present invention, in addition to the above-mentioned hardly volatile control ingredient, a vapor pressure of 2×10 at 30° C. is added so that a certain amount of the spray particles remain suspended in the air after the spatial spray treatment and can exert a control effect against flying pests. -4 mmHg or more, 1×10 -2 A room temperature volatile control component having a viscosity of less than mmHg may be added. Examples of such room temperature volatile control components include metofluthrin, profluthrin, transfluthrin, empenthrin, telallethrin, and furametrin. It has been recognized that when a room temperature volatile control component is partially attached to a floor or wall surface together with a hardly volatile control component, it can synergistically enhance the control effect against crawling pests and / or indoor dust mites. In addition, considering vapor pressure, stability, basic insecticidal efficacy, etc., metofluthrin, profluthrin, and transfluthrin are preferable as room temperature volatile control components, and when optical isomers or geometric isomers based on asymmetric carbons exist in the acid component or alcohol portion of these compounds, each of them and any mixture thereof are of course also included in the present invention.

[0020] In the present invention, an organic solvent is blended to dissolve the above-mentioned hardly volatile control component to form an aerosol concentrate. Examples of such organic solvents 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, glycol ether solvents having 3 to 10 carbon atoms, and ketone solvents, but lower alcohols having 2 to 3 carbon atoms such as ethanol and isopropanol (IPA) are preferred.

[0021] The method for controlling pests and mites of the present invention uses an aerosol for controlling pests and mites containing a hardly volatile control component, and sprays 1.0 to 5.0 mL of the aerosol into an indoor space at a time, thereby maintaining the control effect against crawling pests and / or indoor dust mites for several days in the treated area. The size of the indoor space is 18.8 to 33.3 m2 in volume, which is equivalent to a room of 4.5 to 8 tatami mats. 3 (Area 7.5~13.3m 2 , preferably 2.2 to 3.0 m in height.

[0022] The spray particles after spraying are formed as floating particles floating in the treatment space or as adhesive particles adhering to exposed parts in the treatment space, but the present inventors have conducted research to make adhesive particles more predominant and to increase the ratio of adhesive particles that settle on the floor surface rather than adhering to walls and the like. As a result, the present inventors have found that the specific gravity of the aerosol concentrate and the spraying force of the aerosol are important factors that determine the behavior of adhesive particles that settle, and have identified their optimal ranges. That is, if the specific gravity of the aerosol concentrate is 0.85 to 1.15, preferably 0.89 to 1.10, and the spraying force of the spraying treatment is 10 to 50 gf, preferably 15 to 35 gf at a spray distance of 5 cm, it has been confirmed that 60% or more of the control component settles and adheres to the entire floor surface of the indoor space within 1 hour after spraying, and excellent control effects against crawling pests and mites can be achieved. Regarding the "settling and adhering of the control component over the entire floor surface," there is no need to check each time whether the control component has actually settled and adhered over the entire floor surface. As long as the aerosol is sprayed in the treatment space in a manner consistent with the spirit of the present invention, the control component can be considered to have settled and adhered over the entire floor surface even if there is some distribution or bias in the state of settling and adhering of the sprayed control component to the floor surface, and there is no practical problem even if it is considered in this way. If the specific gravity of the aerosol concentrate is less than 0.85, the amount of spray particles adhering to the floor surface tends to be insufficient, and if the specific gravity of the aerosol concentrate is more than 1.15, the spray particles will settle too quickly and the spread over the entire floor surface will be insufficient. In addition, if the spraying force of the spraying process is less than 10 gf, the spraying force will be insufficient and the spread over the entire floor surface will tend to be insufficient, and even if the spraying force exceeds 50 gf, good spread will not be obtained. The propelling force of the aerosol can be appropriately adjusted by changing the formulation of the aerosol concentrate, the internal pressure of the aerosol, the shape of the nozzle, and the like.

[0023] Furthermore, when the filling amount of the aerosol concentrate is a, the filling amount of the propellant is b, the specific gravity of the aerosol concentrate is S, and the spray force of the aerosol for controlling insects and mites is F, the following formula (1): δ = [a / (a+b)] × S2 × F ··· (1) It is preferable that δ, as defined by the above formula, is in the range of 1.0 to 30, and more preferably in the range of 3.0 to 15.

[0024] If δ is in the range of 1.0 to 30, a sufficient amount of the control component will be uniformly spread over the entire floor surface when the spray particles settle, and a favorable control effect will be obtained. The reason why the control component spreads evenly over the entire floor surface is thought to be that the initial velocity of the spray particles sprayed from the pest and mite control aerosol becomes appropriate, and the spray particles quickly reach every corner of the indoor space after spraying. If δ is less than 1.0, the amount of the control component attached to the floor surface may be insufficient. On the other hand, if δ exceeds 30, the diffusibility over the entire floor surface may be insufficient. Therefore, if δ is outside the range of 1.0 to 30, there is a risk that a satisfactory control effect cannot be achieved.

[0025] The volume ratio [a / (a+b)] of the filling amount a of the aerosol concentrate to the total volume (a+b) of the aerosol for controlling pests and mites is expressed by the following formula (2): 0.1 ≦ [a / (a+b)] ≦ 0.5 (2) It is preferable to satisfy the above. If the volume ratio is within the above range, a sufficient amount of the control ingredient will be uniformly spread over the entire floor surface. If the volume ratio is less than 0.1 and there is too much propellant, the amount of the control ingredient adhering to the floor surface will be insufficient. On the other hand, if the volume ratio exceeds 0.5, the spray particles will settle too quickly and will not spread sufficiently over the entire floor surface.

[0026] Since the aerosol for controlling pests and mites used in the present invention is sprayed in small amounts, there is no need to pay attention to the danger of fire, but an aqueous formulation can be adopted from the viewpoint of reducing the danger of fire as much as possible. In this case, the amount of water contained in the aerosol concentrate is appropriately about 20 to 70 v / v%, and a small amount of a nonionic surfactant may be added as a solubilizing aid within a range that does not affect the spray pattern of the spray particles. Examples of nonionic surfactants include ethers such as polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, and polyoxyethylene alkyl amino ethers, fatty acid esters such as polyethylene glycol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene glycerin fatty acid esters, polyoxyethylene styrenated phenol, and polyalkalolamide of fatty acid, and among them, ethers are suitable.

[0027] In addition to the above components, the aerosol concentrate may also contain, as appropriate, antifungal agents, antibacterial agents, and bactericides targeted at molds, fungi, etc., or fragrances, deodorants, stabilizers, antistatic agents, antifoaming agents, excipients, etc. Examples of antifungal agents, antibacterial agents, and bactericides include hinokitiol, 2-mercaptobenzothiazole, 2-(4-thiazolyl)benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one, triforine, 3-methyl-4-isopropylphenol, and ortho-phenylphenol. Further, examples of fragrance agents include, but are not limited to, aromatic components such as 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, phenylethyl alcohol, amylcinnamic aldehyde, cuminaldehyde, and benzyl acetate, as well as fragrance components containing leaf alcohol and leaf aldehyde, known as the "scent of greenery."

[0028] The propellant used in the present invention includes liquefied gases such as liquefied petroleum gas (LPG), dimethyl ether, and hydrofluorocarbons, and compressed gases such as nitrogen gas, carbon dioxide gas, nitrous oxide, and compressed air, and one or more of these can be appropriately used. The propellant may be appropriately selected in consideration of the adhesion rate of the spray particles to the floor or wall, but it is usually easy to use a propellant mainly composed of LPG. It is preferable to use the propellant by adjusting the gauge pressure (20°C) to 0.1 to 0.7 MPa.

[0029] The above-mentioned pest and mite control aerosol is provided with a constant-volume injection valve with a volume of 1.0 to 5.0 mL per injection, and is used for constant-volume injection treatment indoors. Conventionally, the volume of constant-volume injection valves was 0.2 to 0.4 mL, but the constant-volume injection valve used in the present invention has an increased volume, making it possible to inject the required amount of active ingredient with one push. In addition, the shape of the nozzle, nozzle, container, etc. can be appropriately selected according to the application, purpose, etc. For example, it can be designed as a tabletop type with a button that is pressed from above to inject and a nozzle that faces diagonally upward, or as a small container for portability.

[0030] In the method for controlling pests and mites of the present invention, the thus obtained aerosol for controlling pests and mites is used, and a single spray volume of 1.0 to 5.0 mL, preferably 1.0 to 3.0 mL, is sprayed into the air in an indoor space, whereby the amount of the control component released into the air is 0.1 to 50 mg / m 3 , preferably 0.5 to 50 mg / m 3 The volume of a room of 4.5 to 8 tatami mats is set to 18.8 to 33.3 m. 3 (Area 7.5~13.3m 2 When spraying in an indoor space (2.2 to 3.0 m high), a single spray of the aerosol concentrate usually results in the release of 0.1 to 50 mg / m of the control ingredient into the air. 3 However, in larger indoor spaces, the amount of pest control component released into the air is 0.1 to 50 mg / m depending on the volume of the indoor space. 3By spraying the aerosol concentrate multiple times so that the same pest control effect can be achieved regardless of the size of the indoor space. For example, the volume of a room of 9 to 16 tatami mats is 37.6 to 66.6 m. 3 (Area 15~26.6m 2 When spraying in an indoor space (2.2 to 3.0 m high), spraying the aerosol concentrate twice will release 0.1 to 50 mg / m of the control ingredient into the air. 3 The frequency of use of the pest and mite control aerosol is basically once every 1-2 days, and if it is applied so that the amount of control ingredient released is within the above range, the control effect against crawling pests and / or indoor dust mites can be maintained for several days. In addition, by using a control ingredient that is volatile at room temperature in combination, it is also possible to impart a control effect against flying pests.

[0031] The method for controlling pests and mites of the present invention is particularly effective for controlling cockroaches such as the German cockroach, the American cockroach, and the Siberian cockroach, ants, bedbugs such as the bedbug and the Nettle bug, crawling pests such as the red flour beetle, the rice weevil, the beetle, the pillbug, and the woodlouse, and indoor dust mites such as Tyrophagus putrescentiae, Dermatophagoides farinae, Dermatophagoides pteronyssinus, and Cheyletiella spp. However, the method is not limited to these crawling pests and mites, and is also fully applicable to controlling various pests that fly indoors and cause damage and discomfort to people, such as mosquitoes such as Culex pipiens and Aedes albopictus, midges, house flies, moth flies, black flies, horseflies, bees, and leafhoppers. EXAMPLES

[0032] The method for controlling insects and mites and the aerosol for controlling insects and mites of the present invention will be described in more detail with reference to specific examples and test examples, although the present invention is not limited thereto.

[0033] Example 1 A stock aerosol solution was prepared by dissolving 53 w / v% fenothrin and 0.7 w / v% metofluthrin in ethanol. 12 mL of this stock aerosol solution (a) and 18 mL of liquefied petroleum gas (b) as a propellant were pressurized and filled into an aerosol container (pressure-resistant container) with a metered-dose spray valve and a spray volume of 1.0 mL so that the volume ratio of the stock aerosol solution [a / (a+b)] was 0.4, to obtain the aerosol for controlling pests and mites of Example 1. The specific gravity of this stock aerosol solution was 0.93, and the spray force of this aerosol at a spray distance of 5 cm was 26 gf. In addition, δ was 9.0.

[0034] Nearly sealed volume of 25m 3 Room size (equivalent to 6 tatami mats, area 10 m 2 ) at a slight angle upwards. The adhesion rate (%) of the control ingredient to the floor surface was calculated from the results of gas chromatography analysis described below and the amount of control ingredient released from the aerosol. As a result, it was confirmed that 72% of the total spray particles sprayed by this spray treatment (i.e., 72% of the amount of control ingredient released) settled and adhered to the entire floor surface within 1 hour after spray treatment. For several days after spray treatment, it demonstrated excellent control effects against crawling pests such as cockroaches, ants and lacertids, and also repelled indoor dust mites. In addition, the almost sealed volume of 50m 3 Room (equivalent to a 12 tatami room, area 20 m 2 ) was sprayed twice at a slight angle upwards in the center of the area, and the volume of the area was 25 m. 3 As in the case of the room above, it was also confirmed that the product was effective in controlling crawling pests.

[0035] [Examples 2 to 24, Comparative Examples 1 to 4] Various pest and mite control aerosols shown in Table 1 were prepared in accordance with Example 1. For the pest and mite control aerosols of Examples 2 to 21, 23 to 24, and Comparative Examples 1, 3 and 4, an aerosol container with a metered spray valve and a spray volume of 1.0 mL was used, for the pest and mite control aerosol of Example 22, an aerosol container with a metered spray valve and a spray volume of 2.2 mL was used, and for the pest and mite control aerosol of Comparative Example 2, an aerosol container with a metered spray valve and a spray volume of 0.4 mL was used.

[0036] [Table 1]

[0037] The following tests were carried out using the pest and mite control aerosols of Examples 1 to 24 and Comparative Examples 1 to 4. For indoor dust mites, the extermination effect was first examined, and when the extermination effect was poor, the repellent effect was evaluated. The test results are summarized in Table 2.

[0038] (1) Effectiveness against creeping pests A total of 12 20 x 20 cm glass plates (4 each for German cockroaches, American cockroaches, and Japanese wood ants) were enclosed to create a volume of 25 m. 3 Room (area 10m 2 ) were placed at the four corners of a room, and a plastic ring with a diameter of about 20 cm was placed on each glass plate. In each ring, a given test insect (5 German cockroaches (female adults), 5 American cockroaches (larvae), and 5 Japanese wood ants (wooden ants) were released to roam freely. The test aerosol was sprayed in one shot (spray volume: 1.0 mL in Examples 1-21, 23-24, Comparative Examples 1, 3-4, 2.2 mL in Example 22, and 0.4 mL in Comparative Example 2) at a slight angle upward in the center of the room. After leaving the insects exposed to the drug for 24 hours, the glass plate was moved to another room together with the rings containing the test insects, and they were fed. After another 24 hours, the mortality rate of the test insects was determined.

[0039] (2) Efficacy in controlling indoor dust mites Eight waist-high petri dishes, each 9 cm in diameter and 6 cm in height (four each for Dermatophagoides farinae and Tyrophagus putrescentiae), were closed to create a volume of 25 m. 3 Room (area 10m 2 The test aerosol was sprayed in one shot at a slight angle upwards in the center of the room. After leaving the test aerosol for 24 hours to expose the test mites to the agent, the mortality rate of the test mites was calculated.

[0040] (3) Repellent effect against indoor dust mites In the above test "(2) Extermination effect against indoor dust mites", cotton cloth with a diameter of about 4 cm was placed in the four corners of the room instead of the test mites, and the test aerosol was sprayed with one shot. 24 hours after the spraying, the cotton cloth was taken out and placed in a 4 cm diameter petri dish, and 50 mg of the attraction medium was placed in the center of the petri dish. Separately, about 10,000 test house dust mites or Tyrophagus putrescentiae were released together with the medium in a 9 cm diameter petri dish, and the previously prepared 4 cm diameter petri dish was placed in the center of the 9 cm diameter petri dish. Similarly, an untreated area was prepared using cotton cloth that had not been treated with the test aerosol. After 24 hours, the number of mites that had invaded the cotton cloth was counted, and the mite repellency was calculated according to the following formula. Mite repellency rate (%) = [(number of mites invaded in untreated area - number of mites invaded in treated area) / number of mites invaded in untreated area] × 100

[0041] (4) Rate of pest control ingredient adhesion to floor surface Closed volume 25m 3 Room (area 10m 2) glass plates measuring 20 x 20 cm were placed evenly across the floor of the room in 6-8 places, and the test aerosol was sprayed in one shot at a slight angle upwards in the center of the room. One hour after spraying, all the glass plates were removed, and the adhering control components were washed with acetone and analyzed by gas chromatography. Based on the obtained analytical values, the ratio of the control components that had settled and adhered to the floor surface within one hour of spraying to the theoretical total amount of the control components sprayed (floor adhesion rate) was calculated. In addition, the variation between the glass plates in the control components that adhered to the glass plates was analyzed, and the uniformity of the diffusion of the spray particles was evaluated. The results were graded on a four-point scale, A, B, C, and D, in order of best diffusion uniformity.

[0042] [Table 2]

[0043] As a result of the test, it was confirmed that, according to the pest and mite control method of the present invention using the pest and mite control aerosol of Examples 1 to 24, the spray particles are dispersed almost uniformly over the entire floor surface, and 60% or more of the control component settles and adheres to the floor surface within 1 hour after spraying. In addition, it was confirmed that when the pest and mite control aerosol of Examples 1 to 16 and 20 to 24 containing a crawling pest control compound as a non-volatile control component was used, it exhibited excellent control effects against both crawling pests and indoor dust mites. It was confirmed that when the pest and mite control aerosol of Examples 17 to 19 containing a mite control compound as a non-volatile control component was used, it exhibited excellent control effects against indoor dust mites.

[0044] In contrast, in Comparative Examples 1 to 4, sufficient control effects were not obtained against either crawling pests or indoor dust mites. In Comparative Example 1, an aerosol containing only a pyrethroid compound volatile at room temperature such as empenthrin was used as the control ingredient, which resulted in a small floor adhesion rate, and as a result, it is considered that the control effect was low. In Comparative Example 2, a metered injection valve with an injection volume of 0.4 mL was used, and the control ingredient injected by one push did not reach the required amount, and as a result, it is considered that the control effect was low. In Comparative Examples 3 and 4, in which the specific gravity of the aerosol concentrate was outside the range of 0.85 to 1.15 specified in the present invention, the diffusion uniformity of the spray particles was low, which is considered to be the cause of the decrease in the control effect. [Industrial Applicability]

[0045] The method for controlling pests and mites and the aerosol for controlling pests and mites of the present invention can be used for the purpose of controlling a wide range of pests and mites, not just indoors.

Claims

1. An aerosol for controlling pests and mites, comprising an aerosol concentrate containing a control component and an organic solvent, and a propellant, filled in an aerosol container equipped with a metered-volume injection valve with a single injection volume of 1.0 to 5.0 mL, The pest is a creeping pest, The control component includes fenothrin and / or permethrin, The specific gravity of the aerosol concentrate is 0.85 to 1.15; The aerosol for controlling pests and mites has a spray force of 10 to 35 gf at a spray distance of 5 cm.

2. An aerosol for controlling pests and mites, comprising an aerosol concentrate containing a control component and an organic solvent, and a propellant, filled in an aerosol container equipped with a metered-volume injection valve with a single injection volume of 1.0 to 5.0 mL, The pest is a creeping pest, The control component includes fenothrin and / or permethrin, The specific gravity of the aerosol concentrate is 0.85 to 1.15; The spray force of the pest and mite control aerosol is 10 to 35 gf at a spray distance of 5 cm; When the filling amount of the aerosol concentrate is a, the filling amount of the propellant is b, the specific gravity of the aerosol concentrate is S, and the spraying force of the pest and mite control aerosol is F, the following formula (1): δ = [a / (a+b)] × S ２ × F ・・・ (1) is configured so that δ defined as is in the range of 3.0 to 30, The aerosol for controlling pests and mites is configured so that the volume ratio [a / (a+b)] of the filling amount a of the aerosol concentrate to the total volume (a+b) of the aerosol for controlling pests and mites is in the range of 0.2 to 0.

4.

3. An aerosol for controlling pests and mites, comprising an aerosol concentrate containing a control component and an organic solvent, and a propellant, filled in an aerosol container equipped with a metered-volume injection valve with a spray volume of 1.0 mL per injection, The pest is a creeping pest, The control component includes fenothrin and / or permethrin, The specific gravity of the aerosol concentrate is 0.85 to 1.15; The spray force of the pest and mite control aerosol is 10 to 50 gf at a spray distance of 5 cm; When the filling amount of the aerosol concentrate is a, the filling amount of the propellant is b, the specific gravity of the aerosol concentrate is S, and the spraying force of the pest and mite control aerosol is F, the following formula (1): δ = [a / (a+b)] × S ２ × F ・・・ (1) is configured so that δ defined as is in the range of 3.0 to 30, The aerosol for controlling pests and mites is configured so that the volume ratio [a / (a+b)] of the filling amount a of the aerosol concentrate to the total volume (a+b) of the aerosol for controlling pests and mites is in the range of 0.2 to 0.

4.

4. An aerosol for controlling pests and mites, comprising an aerosol concentrate containing a control component and an organic solvent, and a propellant, filled in an aerosol container equipped with a metered-volume injection valve with a single injection volume of 1.0 to 5.0 mL, The pest is a creeping pest, The control component includes fenothrin and / or permethrin, The specific gravity of the aerosol concentrate is 0.85 to 1.15; The spray force of the pest and mite control aerosol is 10 to 35 gf at a spray distance of 5 cm; When the filling amount of the aerosol concentrate is a, the filling amount of the propellant is b, the specific gravity of the aerosol concentrate is S, and the spraying force of the pest and mite control aerosol is F, the following formula (1): δ = [a / (a+b)] × S ２ × F ・・・ (1) is configured so that δ defined as is in the range of 4.5 to 30, The aerosol for controlling pests and mites is configured so that the volume ratio [a / (a+b)] of the filling amount a of the aerosol concentrate to the total volume (a+b) of the aerosol for controlling pests and mites is in the range of 0.1 to 0.

4.

5. An aerosol for controlling pests and mites, comprising an aerosol concentrate containing a control component and an organic solvent, and a propellant, filled in an aerosol container equipped with a metered-volume injection valve with a single injection volume of 1.0 to 5.0 mL, The pest is a creeping pest, The control component includes at least one selected from the group consisting of fenothrin, permethrin, benzyl benzoate, and dibutyl sebacate, The specific gravity of the aerosol concentrate is 0.85 to 1.15; The spray force of the pest and mite control aerosol is 10 to 35 gf at a spray distance of 5 cm; When the filling amount of the aerosol concentrate is a, the filling amount of the propellant is b, the specific gravity of the aerosol concentrate is S, and the spraying force of the pest and mite control aerosol is F, the following formula (1): δ = [a / (a+b)] × S ２ × F ・・・ (1) is configured so that δ defined as is in the range of 6.7 to 30, The aerosol for controlling pests and mites is configured so that the volume ratio [a / (a+b)] of the filling amount a of the aerosol concentrate to the total volume (a+b) of the aerosol for controlling pests and mites is in the range of 0.1 to 0.

4.

6. 6. The aerosol for controlling insects and mites according to claim 1, wherein the organic solvent is a lower alcohol having 2 to 3 carbon atoms.

7. A method for controlling pests and mites, which comprises spraying the aerosol for controlling pests and mites according to any one of claims 1 to 6.

Images