Spray for controlling indoor pests

Abstract

To provide a spray for controlling indoor pests that can control wandering pests such as cockroaches.SOLUTION: The present invention provides a spray for controlling indoor pests targeting Blattaria, which includes pyrethrin as a pyrethroid compound, sorbitan fatty acid ester as a surfactant, water, and menthol, wherein the weight of menthol is 0.01 to 1 wt.% relative to the total weight of the pyrethroid compound, the surfactant, the water, and the menthol, and the weight of the water is 88 wt.% or more, wherein the spray for controlling indoor pests is used by spraying and applying to a wandering area of the pests.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a spray for controlling indoor pests.

Background Art

[0002] There is known a spray for controlling indoor pests filled with a pest control agent containing a pyrethroid compound, a surfactant, and water (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Such a spray for controlling indoor pests is a spray that does not use compressed gas, so-called a hand spray, and generally has a weaker injection pressure than an aerosol spray. Therefore, the spray particles sprayed from a finger spray tend to be large and it is said that it is difficult to keep them floating in the air for a long time.

[0005] Therefore, the spray for controlling indoor pests according to Patent Document 1 can control flying pests such as mosquitoes, flies, and fruit flies by the sprayed particles that have fallen on the floor or the like gradually vaporizing. Since there are also wandering pests such as cockroaches inhabiting indoors, there has been a demand for a pest control spray that can also control wandering pests such as cockroaches by the sprayed particles that have fallen on the floor or the like.

[0006] Therefore, as a result of intensive studies, the present inventors aim to provide a spray for controlling indoor pests that has a more excellent control efficacy against wandering pests.

Means for Solving the Problems

[0007] As a result of intensive studies to solve such problems, the present inventors have arrived at the present invention. That is, the present invention is [1] An indoor pest control spray containing a pyrethroid compound, a surfactant, water, and at least one selected from menthol, pinene, and limonene. [2] The above indoor pest control spray, wherein the weight of at least one selected from menthol, pinene, and limonene is 0.01 to 1% by weight based on the total weight of the pyrethroid compound, the surfactant, water, and at least one selected from menthol, pinene, and limonene. [3] The above indoor pest control spray, wherein the pest is a wandering pest. [4] The above indoor pest control spray, wherein the pest is a cockroach pest. [5] The above indoor pest control spray, which is used by spraying and applying it to the wandering area of the pest. is provided.

Effects of the Invention

[0008] According to the present invention, it becomes possible to efficiently control wandering pests inhabiting indoors.

Modes for Carrying Out the Invention

[0009] Examples of the pyrethroid compound used in the indoor pest control spray of the present invention include etofenprox, phenothrin, prallethrin, phthalthrin, imiprothrin, resmethrin, permethrin, silafluofen, cyfluthrin, silafluofen, profenofos, monofluoroethrin, empenthrin, deltamethrin, and pyrethrin. Among these, it is preferable to use etofenprox, phenothrin, and pyrethrin.

[0010] Examples of the surfactant used in the spray for indoor pest control of the present invention include sorbitan fatty acid esters such as glycerin fatty acid ester, sorbitan oleate, sorbitan stearate, and sorbitan palmitate.

[0011] The spray for indoor pest control of the present invention uses one selected from menthol, pinene, and limonene. Although isomers exist in menthol, pinene, and limonene, these are also included in the present invention.

[0012] The weight of one selected from menthol, pinene, and limonene contained in the spray for indoor pest control of the present invention is 0.01 to 1% by weight based on the total weight of the pyrethroid compound, surfactant, water, and at least one selected from menthol, pinene, and limonene. Also, by setting the weight of water to 88% by weight or more based on the total weight of the pyrethroid compound, surfactant, water, and at least one selected from menthol, pinene, and limonene, contamination of the floor and the like can be suppressed.

[0013] The spray for indoor pest control of the present invention may further contain other components, such as alcohols, preservatives, bactericides, fungicides, deodorants, pH adjusters, chelating agents, and fragrances. Examples of the alcohols include monohydric alcohols such as ethanol and isopropyl alcohol, and polyhydric alcohols such as sorbitol, propylene glycol, glycerin, 1,3 - butylene glycol, and dipropylene glycol. Examples of the preservatives include eucalyptus oil, phenoxyethanol, and parabens such as methylparaben.

[0014] Examples of the spray container used in the spray for indoor pest control of the present invention include hand spray containers such as trigger spray containers and finger spray containers. Examples of such trigger spray containers include containers in which a trigger-type spray device disclosed in, for example, FIGS. 4 of JP-A-2005-288256 and JP-A-2011-144141 is attached to the mouth of a container body filled with a pest control composition. Examples of finger spray containers include containers in which a finger spray disclosed in, for example, FIG. 5 of JP-A-2011-144141 and FIG. 10 of JP-A-9-256272 is attached to the mouth of a container body filled with a pest control composition.

[0015] The average particle diameter of the spray particles sprayed from the indoor pest control spray of the present invention is adjusted to be 80 to 350 μm, preferably 100 to 250 μm. The spray particles referred to here mean particles. The average particle diameter is the particle diameter at 50% of the integrated value in the volume-based particle size distribution determined by the laser diffraction / scattering method, and can be measured by AEROTRAC SPR MODEL-7340 manufactured by Nikkiso Co., Ltd.

[0016] The spray amount per push of the indoor pest control spray of the present invention is adjusted to be 0.3 to 1.5 mL.

[0017] The indoor pest control spray of the present invention is mainly used by being spray-coated on the wandering areas of pests. Examples of such wandering areas of pests to be spray-coated include, for example, indoor floor surfaces and wall surfaces, as well as furniture such as chairs and desks.

[0018] Examples of pests to be controlled by the indoor pest control spray of the present invention include the following pests. Booklice such as Liposcelis bostrychophila; Cockroach pests: German cockroach, black cockroach, American cockroach, smokybrown cockroach, oriental cockroach, etc.; Mite pests: Mites such as Dermatophagoides farinae, Dermatophagoides pteronyssinus, Dermatophagoides yamato, Schultziana dermatophagoides, etc., dust mites such as Euroglyphus maynei, etc., scab mites such as Sarcoptes scabiei, Psoroptes ovis, etc., follicle mites such as Demodex brevis, Demodex kuwata, etc., house dust mites, bird mites, Among these, it has a particularly effective effect against cockroach pests. In addition, as the sprayed particles adhering to the floor or the like vaporize Diptera pests: Mosquitoes such as Aedes aegypti, Aedes albopictus, and Culex tritaeniorhynchus; Aedes genus such as Aedes albopictus and Aedes vittatus; Chironomidae; House flies such as Musca domestica and Musca sorbens; Drosophila; Flesh flies such as Sarcophaga peregrina; Blow flies such as Calliphora vicina; Midges; Horse flies; Robber flies; Tabanidae; etc. It is also possible to control them.

Examples

[0019] The present invention will be described more specifically with reference to the following examples, but the present invention is not limited to the examples. Control test against cockroaches

[0020] [Preparation of spray for indoor pest control] [Example 1] 0.13% by weight of pyrethrin (Sumitomo Natural Pyrethrin 75 manufactured by Sumitomo Chemical Co., Ltd., natural pyrethrin content: 75% by weight) as a pyrethroid compound, 3% by weight of glycerin fatty acid ester (01075TX manufactured by Takemoto Yushi Co., Ltd.) as a surfactant, 1% by weight of menthol (L-menthol manufactured by Kanto Chemical Co., Inc.) and 95.87% by weight of water were mixed and stirred, and then filled into a commercially available trigger spray container and a trigger (manufactured by Canion Co., Ltd., model T-95) was attached to prepare a spray for indoor pest control of the present invention (hereinafter referred to as the present invention spray 1).

[0021] [Example 2] As a pyrethroid compound, 0.13% by weight of pyrethrin (Sumitomo Natural Pyrethrin 75 manufactured by Sumitomo Chemical Co., Ltd., natural pyrethrin content: 75% by weight), 4% by weight of glycerin fatty acid ester (01075TX manufactured by Takemoto Yushi Co., Ltd.) as a surfactant, 1% by weight of pinene ((1S)-(-)-α-Pinene manufactured by Tokyo Chemical Industry Co., Ltd.) and 94.87% by weight of water were mixed and stirred, and then filled into a commercially available trigger spray container and a trigger (manufactured by Kanyo Co., Ltd., model T-95) was attached to prepare a spray for controlling indoor pests of the present invention (hereinafter referred to as the present invention spray 2).

[0022] [Example 3] As a pyrethroid compound, 0.13% by weight of pyrethrin (Sumitomo Natural Pyrethrin 75 manufactured by Sumitomo Chemical Co., Ltd., natural pyrethrin content: 75% by weight), 5% by weight of glycerin fatty acid ester (01075TX manufactured by Takemoto Yushi Co., Ltd.) as a surfactant, 1% by weight of limonene (D-limonene manufactured by LKT Labs, Inc) and 93.87% by weight of water were mixed and stirred, and then filled into a commercially available trigger spray container and a trigger (manufactured by Kanyo Co., Ltd., model T-95) was attached to prepare a spray for controlling indoor pests of the present invention (hereinafter referred to as the present invention spray 3).

[0023] [Comparative Example 1] As a pyrethroid compound, 0.13% by weight of pyrethrin (Sumitomo Natural Pyrethrin 75 manufactured by Sumitomo Chemical Co., Ltd., natural pyrethrin content: 75% by weight), 3% by weight of glycerin fatty acid ester (01075TX manufactured by Takemoto Yushi Co., Ltd.) as a surfactant and 96.87% by weight of water were mixed and stirred, and then filled into a commercially available trigger spray container and a trigger (manufactured by Kanyo Co., Ltd., model T-95) was attached to prepare a comparative spray for controlling indoor pests (hereinafter referred to as comparative spray 1).

[0024] [Comparative Example 2] As a pyrethroid compound, 0.13% by weight of pyrethrin (Sumitomo Natural Pyrethrin 75 manufactured by Sumitomo Chemical Co., Ltd., natural pyrethrin content: 75% by weight), 5% by weight of glycerin fatty acid ester (01075TX manufactured by Takemoto Yushi Co., Ltd.) as a surfactant, and 94.87% by weight of water were mixed and stirred, and then filled into a commercially available trigger spray container and a trigger (manufactured by Kanyo Co., Ltd., model T-95) was attached to prepare a spray for indoor pest control for comparison (hereinafter referred to as Comparative Spray 2).

[0025] 〔Control Effect Test against Cockroaches〕 The position of the spray nozzle injection hole was adjusted on a 15 cm × 15 cm × 4 mm veneer (Sampleprint Normandie Pine No. 119) so that it was in the direction of the central area of the veneer. At a distance of 30 cm from the veneer, Sprays 1 to 3 of the present invention and Comparative Sprays 1 to 2 were each spray-coated so that 1.0 g of the spray liquid adhered to the veneer, and left standing in a room at a temperature of 25°C and a humidity of 26% for 30 minutes to prepare a veneer with the spray liquid adhered. Next, margarine was applied to the inner side surface of a plastic cup with a diameter of 10 cm and a height of 15 cm for the purpose of preventing cockroaches from escaping, and 3 male and 3 female Blattella germanica were put in. Then, the veneer with the spray liquid adhered was placed so as to cover the container mouth, and then turned upside down, and the Blattella germanica were allowed to wander on the veneer for 5 minutes. After collecting the Blattella germanica in a separately prepared plastic cup, the number of knockdown (KD) insects at 60, 120, 180, 300, 600, 1200, and 1800 seconds after collection was counted, and the KT50 value was calculated by the probit method. The above test was repeated twice, and the average KT50 value was calculated. The results are shown in Table 1.

[0026] TIFF2025100781000001.tif66106

Claims

**Claim 1** An indoor pest control spray for cockroaches, which contains pyrethrin as a pyrethroid compound, sorbitan fatty acid ester as a surfactant, water and menthol, wherein the weight of menthol is 0.01 to 1% by weight based on the total weight of the pyrethroid compound, surfactant, water and menthol, and the weight of water is 88% by weight or more, and the indoor pest control spray is used by spraying and applying it to the foraging areas of pests. **Claim 2** The indoor pest control spray according to Claim 1, which contains only pyrethrin as the pyrethroid compound. **Claim 3** The indoor pest control spray according to Claim 1 or 2, which has an excellent knockdown effect.

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