JP4154019B2 - Ant repellent and control agent - Google Patents

Description

表１に示す試験結果から、天然ピレトリンは、ピレスロイド系殺虫剤に比べて、各種アリ類に対して極めて高い駆除効果を有することがわかる。
【００２３】
試験例２
（１）供試剤
処方例１、処方例２、比較例１及び比較例３で得られたエアゾール剤を供試剤として用いた。
（２）供試虫
恒温（２５℃）、恒湿（７０％）、長日条件（１４Ｌ１０Ｄ）下で飼育中のアミメアリ（Pristomymex pungens）を供試虫として用いた。
（３）試験方法
供試剤をベニヤ板（１０×１０ｃｍ）の垂直３０ｃｍ上方から３秒間噴射塗布し、室内条件下（２５℃、１４Ｌ１０Ｄ）で約２４時間風乾した。このベニヤ板を、供試剤を噴射塗布していないベニヤ板と接触した状態に併置し、その上にガラスリング（直径９ｃｍ，高さ６ｃｍ）をその中心が上記２枚のベニヤ板の接合部中心に位置するように置いた。その中に供試虫１０個体を放飼し、処理後１８０分目の時点で各エリア（ガラスリング内の供試剤塗布ベニヤ板上の半円領域と無処理ベニヤ板上の半円領域）に存在する個体数をカウントした。
また、効果の持続性を調べるために、上記と同様に供試剤を噴射塗布した新たなベニヤ板を室内条件下（２５℃、１４Ｌ１０Ｄ）に放置し、その後、経時的に同様の試験を行った。
（４）試験結果
試験結果を表２に示す。
【００２４】
【表２】

表２に示す試験結果から、天然ピレトリンを用いた処方例１及び天然ピレトリンと天然精油のレモングラスオイルを併用した処方例２は、ピレスロイド系殺虫剤を用いた比較例１及びＤＥＥＴを用いた比較例３に比べて、アリ類に対する忌避効果及びその持続性が極めて高いことがわかる。また、天然ピレトリンを単独で用いた場合（処方例１）に比べて、天然精油のレモングラスオイルを併用した場合（処方例２）、アリ類に対する忌避効果及びその持続性がかなり増強されることがわかる。
【００２５】
試験例３
（１）供試剤
処方例３及び比較例４で得られた粉剤を供試剤として用いた。
（２）供試虫
恒温（２５℃）、恒湿（７０％）、長日条件（１４Ｌ１０Ｄ）下で飼育中のアミメアリ（Pristomymex pungens）、トビイロケアリ（Lasius niger）、クロヤマアリ（Formica japonica）を供試虫として用いた。
（３）試験方法
ベニヤ板（１０×１０ｃｍ）上に濾紙（直径９ｃｍ）を置き、その上にガラスリング（直径９ｃｍ，高さ６ｃｍ）を載せたものを試験容器とした。試験容器内に供試虫１０個体を入れ、供試剤０．１ｇを垂直３０ｃｍ上から均一に散布し、時間経過に伴うノックダウン数をカウントした。また、観察後、含水綿球を入れて恒温室内（２５℃）で保管し、２４時間後の死亡数を調べた。
（４）試験結果
試験結果を表３に示す。
【００２６】
【表３】

表３に示す結果から明らかなように、天然ピレトリンを配合した粉剤（処方例３）は、カーバメート系殺虫剤を配合した粉剤（比較例４）に比べて、アリ類に対して極めて高い駆除効果を有していた。
【００２７】
【発明の効果】
以上のように、本発明のアリ類の忌避・駆除剤は、天然ピレトリンを有効成分として含有しているため、安全性が高く、アリ類に対して極めて高い駆除効果及び忌避効果を有し、しかも忌避効果の持続性に優れ、また低濃度でも高い忌避効果を示す。また、上記のような高い駆除効果や忌避効果を有し、安全性に優れると共に、人の臭覚に対してはマイルドな芳香を示すことにより、屋外のみならず屋内においても問題なく使用できる。
さらに、上記天然ピレトリンと共に天然精油のレモングラスオイルを併用することにより、アリ類に対する忌避効果及びその持続性をさらに増強できるという利点が得られる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a repellent / control agent for ants. In addition, the term “repelling / controlling agent” used in the present specification means a preparation that can act as a repellent and also as a controlling agent against ants, depending on the use form and dosage form.
[0002]
[Prior art]
Conventionally, many insecticides including pyrethroid insecticides and organophosphorus insecticides are known as sanitary insecticides such as flies and mosquitoes.
However, in recent years, organisms that do not fall within the category of sanitary pests, such as ants, have been subject to repelling or extermination as unpleasant pests. Therefore, although the said insecticide is utilized also as a repellent of these unpleasant pests, what shows the satisfactory repellent effect is not seen. Moreover, not only outdoors but also indoors have become application areas, and the insecticides described above are also applied to things that people touch directly, such as cupboards, furniture, and sinks. Contamination is a problem.
[0003]
In view of the above problems, repellents using natural essential oils or their components have been recently proposed. However, with regard to natural essential oils, many proposals have been made as repellents against the above-mentioned sanitary pests, but there are far fewer substances that have been confirmed to be effective against ants, and repellents that can be effectively satisfied. Can't be seen.
As a repellent of ants, for example, in Japanese Patent Laid-Open Nos. 1-294601 and 4-288003, natural terpenoid monomers, these low-polymerization oligomers or low-copolymerization oligomers have a repellent effect on termites. JP-A-4-321613 discloses that an extract from a cyperaceae plant exhibits a repellent effect on Azuma squirrel ants. Japanese Patent Application Laid-Open No. 4-321613 describes that borneol or isoborneol has an effect of distorting the sense of direction of ants. Although these compounds can be evaluated in terms of safety, they have not yet been satisfactory in terms of repellent efficacy.
In addition, the present applicant also found that cassia oil, pimenta oil, bay oil, cinnamon oil, cedarwood oil and pine oil, which are natural essential oils, have a repellent effect on ants, and has already filed a patent application. (Japanese Patent Laid-Open No. 8-198119), these natural essential oils have little control (insecticidal) effect on ants.
[0004]
By the way, N, N-diethyl-m-toluamide (hereinafter abbreviated as DEET) is commonly used as a pest repellent, and it can be effectively used as a repellent for ants as well.
However, DEET is a synthetic product, and natural essential oil is easier to supply in terms of stable supply, and natural essential oil is more advantageous in terms of safety. In addition, there is a problem that irritation to the nasal mucosa may be observed when it is formulated into an aerosol and sprayed into fine particles. Furthermore, DEET has no repellent effect in space, only a repellent effect by contact with pests, and there is a problem that pest intrusion from other than the contact surface cannot be prevented.
[0005]
[Problems to be solved by the invention]
Therefore, the object of the present invention is high in safety, has a higher extermination effect than conventional insecticides against ants, and has a higher repellent effect than DEET, and is excellent in sustainability of the repellent effect, even at a low concentration. The object is to provide an ant repellent / pesticide which can exhibit a high repellent effect.
Furthermore, the object of the present invention has the above-mentioned high extermination effect and repellent effect, is excellent in safety, and exhibits a mild fragrance for human sense of smell, thereby causing problems not only outdoors but also indoors. It is to provide a repellent / control agent for ants that can be used without any problems.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, according to the present invention, there is provided an ant repellent / control agent characterized by containing natural pyrethrin as an extract component of insect repellent chrysanthemum and lemongrass oil of natural essential oil as active ingredients. Ru is provided.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In order to solve the above problems, the present inventor has intensively studied an ant repellent and extermination agent that is highly safe and does not disrupt the balance of the ecosystem. It has been found to have excellent repellent and extermination effects.
As confirmed in the present invention, natural pyrethrin has a repellent effect and a repellent effect on various ants, and is also excellent in the persistence of the repellent effect. Furthermore, since it is extremely safe for human animals and has a mild fragrance, it can be used indoors as well as outdoors.
Further, according to the research of the present inventor, it has been found that the repellent effect on ants and the durability thereof can be further enhanced by using the natural essential oil lemongrass oil together with the natural pyrethrin .
Examples of the ants to be repelled and controlled by the repellent / pesticide of the present invention include red ants, flying squirrels, black ants, black ants, rugliari, white whales, cedar ants, and all other ants.
[0008]
The ant repellent / control agent of the present invention can be applied as it is to areas where ant repellent and control are required as it is, but usually the application area using an appropriate carrier or other compounding agent is preferred. These are prepared and used in various forms suitable for the application method, for example, liquid agents such as aerosols, oils and emulsions, solids such as powders, granules and sheets. Carriers used for preparing liquid forms include, for example, water, alcohols such as methyl alcohol and ethyl alcohol, glycols such as ethylene glycol and propylene glycol, ketones such as acetone and methyl ethyl ketone, dioxane, tetrahydrofuran and dimethyl ether. Ethers such as hexane, kerosene, and normal paraffins, aromatic hydrocarbons such as benzene and toluene, halogenated hydrocarbons such as dichloromethane and dichloroethane, and esters such as ethyl acetate and butyl acetate. It is done.
[0009]
The ant repellent / control agent of the present invention in liquid form further includes commonly used additives such as film forming agents, emulsifiers, dispersants, spreading agents, wetting agents, stabilizers, propellants, such as polyoxyethylene glycol Nonionic surfactants such as fatty acid esters and polyoxyethylene alkylphenyl ethers, anionic surfactants such as carboxymethylcellulose, and surfactants such as cationic surfactants such as quaternary ammonium salts, nitro Cellulose derivatives such as cellulose, acetylose, acetylbutyrylcellulose, methylcellulose, vinyl resins such as vinyl acetate resins, alkyd resins, ethylene vinyl acetate resins, urea resins, epoxy resins, polyester resins, urethane resins, Silicon resin, acrylic resin, chlorinated rubber, polyvinyl alcohol, etc. Coating form by blending film forming agent, liquefied petroleum gas (hereinafter abbreviated as LPG), dimethyl ether (hereinafter abbreviated as DME), propellant such as carbon dioxide gas, nitrogen gas, casein, gelatin, alginic acid, etc. It can be used in various forms such as adhesive forms, emulsions, dispersants, suspensions, sprays, aerosols and the like.
[0010]
Examples of the carrier used for preparing the solid agent include clay, talc, kaolin, diatomaceous earth, gypsum, perlite, bentonite, acid clay, volcanic rock, magnesium aluminate metasilicate, calcium carbonate, and sepiolite. Mineral powders, vegetable powders such as wood powder, soybean powder, wheat flour, starch, and coffee extract can be used, and can be used in dosage forms such as granules and powders.
Moreover, it can also prepare in a sheet-like dosage form using the said support | carrier, an above-described coating-film formation agent, etc.
[0011]
The compounding amount of the active ingredient in the ant repellent / control agent of the present invention and the application amount of the repellent / control agent may be determined as appropriate according to the dosage form, application method, and application location, but are not limited. In general, if the content of natural pyrethrin is 0.001 to 10% by weight, sufficient repellent effect and extermination effect are exhibited against ants. Moreover, if the content of lemongrass oil, which is a natural essential oil blended in combination with natural pyrethrin, is 0.001 to 10% by weight, the repellent effect on ants and its durability can be sufficiently enhanced. In addition, although it cannot be said that it is necessarily preferable from the viewpoint of economy, it goes without saying that natural pyrethrin and natural essential oil can be blended at a ratio exceeding the above range.
[0012]
Further, the ant repellent / control agent of the present invention includes known pest repellents other than those listed above, efficacy enhancers, antioxidants, rodent control and repellents, insecticides, fungicides, A glaze, a herbicide, a fertilizer, a fragrance | flavor, a coloring agent, etc. can be mix | blended. Other pest repellents that can be incorporated include DEET, 2,3,4,5-bis (Δ ₂ -butylene) -tetrahydrofurfural, di-n-propylisocincomeronate, di-n-butyl succinate, 2-hydroxyethyl octyl sulfide, 2-t-butyl-4-hydroxyanisole, 3-t-butyl-4-hydroxyanisole, 1-ethynyl-2-methyl-2-pentenyl 2,2,3,3-tetramethyl Cyclopropanecarboxylate, 1-ethynyl-2-methyl-2-pentenyl 2,2-dimethyl-3- (2 ′, 2′-dichlorovinyl) -cyclopropane-1-carboxylate, N-hexyl-3,4- Examples thereof include dichloromaleimide.
[0013]
In addition, as an efficacy enhancer, N- (2-ethylhexyl) -bicyclo- [2,2,1] -5-heptene-2,3-dicarboximide, 6- (propylpiperonyl) -butylcarbityl ether N- (2-ethylhexyl) -1-isopropyl-4-methylbicyclo [2,2,2] oct-5-ene-2,3-dicarboximide, octachlorodipropyl ether, etc. as an antioxidant Butylhydroxyanisole, dibutylhydroxytoluene, tocopherol, γ-oryzanol, etc., rodent control and repellents such as α-naphthylthiourea, cycloheximide, etc., antifungal agents such as salicylic acid, benzoic acid, sorbic acid, p-Chloro-m-xylenol, 2- (4'-thiazoyl) benzimidazole, etc. as antifungal agents - bromo cinnamic aldehyde, can be mentioned N- dimethyl -N- phenyl-N'-(fluorodichloromethylthio) Chiosurufamido like.
[0014]
【Example】
Hereinafter, the present invention will be specifically described with reference to prescription examples and test examples.
Formulation Example 1 (Aerosol)
Natural pyrethrin 0.1% by weight
Solvent (kerosene) 49.9% by weight
Propellant (DME / LPG mixed gas) 50.0% by weight
[0015]
Formulation Example 2 (Aerosol)
Natural pyrethrin 0.1% by weight
Natural essential oil 0.1% by weight
(Lemon grass for oil)
Solvent (Kerosin) 49.8% by weight
Propellant (DME / LPG mixed gas) 50.0% by weight
[0016]
Formulation Example 3 (powder)
Natural pyrethrin 1.0% by weight
Mineral powder (talc) 99.0% by weight
[0017]
Comparative Example 1 (aerosol)
Allesulin 0.1% by weight
Solvent (kerosene) 49.9% by weight
Propellant (DME / LPG mixed gas) 50.0% by weight
[0018]
Comparative Example 2 (aerosol)
Phthasulin 0.1% by weight
Solvent (kerosene) 49.9% by weight
Propellant (DME / LPG mixed gas) 50.0% by weight
[0019]
Comparative Example 3 (Aerosol)
DEET 0.1% by weight
Solvent (kerosene) 49.9% by weight
Propellant (DME / LPG mixed gas) 50.0% by weight
[0020]
Comparative Example 4 (powder)
Carbaryl 1.0% by weight
Mineral powder (talc) 99.0% by weight
[0021]
Test example 1
(1) Test agent The aerosol agents obtained in Formulation Example 1, Comparative Example 1 and Comparative Example 2 were used as test agents.
(2) Test insects Tested on red-eared ants (Pristomymex pungens), white-eye ants (Lasius niger), and black ants (Formica japonica) under constant temperature (25 ° C), constant humidity (70%), and long-day conditions (14L10D) Used as an insect.
(3) Test Method A filter paper (diameter 9 cm) was placed on a plywood board (10 × 10 cm), and a glass ring (diameter 9 cm, height 6 cm) was placed thereon as a test container. Ten test insects were placed in the test container, and the test agent was sprayed for 1 second from 30 cm vertically, and the number of knockdowns with time was counted. Moreover, after observation, water-containing cotton balls were added and stored in a constant temperature room (25 ° C.), and the number of deaths after 24 hours was examined.
(4) Test results Table 1 shows the test results.
[0022]
[Table 1]

From the test results shown in Table 1, it can be seen that natural pyrethrin has an extremely high extermination effect on various ants compared to pyrethroid insecticides.
[0023]
Test example 2
(1) Test agent The aerosols obtained in Formulation Example 1, Formulation Example 2, Comparative Example 1 and Comparative Example 3 were used as test agents.
(2) Test insect A red ant (Pristomymex pungens) bred under constant temperature (25 ° C.), constant humidity (70%), and long-day conditions (14L10D) was used as a test insect.
(3) Test method The test agent was spray-applied for 3 seconds from above 30 cm vertically on a plywood board (10 × 10 cm) and air-dried for about 24 hours under indoor conditions (25 ° C., 14 L10D). This plywood plate is placed in contact with a plywood plate that has not been sprayed with the test agent, and a glass ring (diameter: 9 cm, height: 6 cm) is positioned on the center of the joint between the two plywood plates. Placed to do. Ten test insects are released in the area, and are present in each area (a semicircle area on the test material-coated plywood and a semicircle area on the untreated plywood in the glass ring) at the 180th minute after treatment. The number of individuals to be counted was counted.
In addition, in order to investigate the sustainability of the effect, a new plywood board sprayed with the test agent as described above was left under room conditions (25 ° C., 14L10D), and thereafter the same test was performed over time. .
(4) Test results Table 2 shows the test results.
[0024]
[ Table 2 ]

From the test results shown in Table 2, Formulation Example 1 using natural pyrethrin and Formulation Example 2 using both natural pyrethrin and lemongrass oil of natural essential oil are compared with Comparative Example 1 using pyrethroid insecticide and DEET Compared with Example 3, it turns out that the repellent effect with respect to ants and its sustainability are very high. In addition, when natural pyrethrin is used alone (Formulation Example 1), when natural essential oil lemongrass oil is used together (Formulation Example 2), the repellent effect on ants and its sustainability are considerably enhanced. I understand.
[0025]
Test example 3
(1) Test agent The powder obtained in Prescription Example 3 and Comparative Example 4 was used as a test agent.
(2) Test insects Tested on red-eared ants (Pristomymex pungens), white-eye ants (Lasius niger), and black ants (Formica japonica) under constant temperature (25 ° C), constant humidity (70%), and long-day conditions (14L10D) Used as an insect.
(3) Test Method A filter paper (diameter 9 cm) was placed on a plywood board (10 × 10 cm), and a glass ring (diameter 9 cm, height 6 cm) was placed thereon as a test container. Ten test insects were placed in a test container, and 0.1 g of the test agent was uniformly sprayed from above 30 cm vertically, and the number of knockdowns with time was counted. Moreover, after observation, water-containing cotton balls were added and stored in a constant temperature room (25 ° C.), and the number of deaths after 24 hours was examined.
(4) Test results Table 3 shows the test results.
[0026]
[Table 3]

As is apparent from the results shown in Table 3, the powder containing natural pyrethrin (Formulation Example 3) is extremely effective against ants compared to the powder containing the carbamate insecticide (Comparative Example 4). Had.
[0027]
【The invention's effect】
As described above, since the ant repellent / control agent of the present invention contains natural pyrethrin as an active ingredient, it has high safety, and has an extremely high repellent effect and repellent effect on ants, In addition, the repellent effect is excellent and the repellent effect is high even at low concentrations. Moreover, it has the above high extermination effect and repellent effect, is excellent in safety, and exhibits a mild fragrance with respect to human odor, so that it can be used not only outdoors but also indoors without problems.
Furthermore, the combined use of lemon grass for oil of natural essential oils together with the natural pyrethrins, advantage can be further enhanced repellency and its durability against ants obtained.

Claims (4)

An ant repellent and extermination agent characterized by containing natural pyrethrin and natural essential oil lemongrass oil as active ingredients. 2. The repellent / control agent according to claim 1, wherein the content of the natural pyrethrin is 0.001 to 10% by weight. 3. The repellent / control agent according to claim 1, wherein the content of the lemongrass oil is 0.001 to 10% by weight. The repellent / control agent according to any one of claims 1 to 3 , wherein the dosage form is an aerosol, an oil, an emulsion, a powder, a granule, or a sheet.