JP4901139B2 - Pest control / insecticidal composition and method for pest control - Google Patents

Description

  The present invention relates to a control / insecticidal composition capable of effectively controlling unpleasant pests such as stink bugs and a method for controlling and killing unpleasant pests such as stink bugs.

  Target insect pesticides are divided into hygiene pests managed by the Ministry of Health, Labor and Welfare, agricultural pests managed by the Ministry of Agriculture and Water, livestock and pet pests, and livelihood pests (unpleasant pests, architectural pests, clothing pests). Developments related to insecticides are underway under regulations such as the Control Law.

  Pests such as flies and mosquitoes that cause sanitary damage such as causing diseases to people through diseases are sanitary pests, while they mainly inhabit or invade the house and cause sensory harm, Pests not included in the category of sanitary pests are called unpleasant pests.

  In recent years, the occurrence of flies and mosquitoes has decreased in urban areas due to the spread of sewers, but conversely, as land development spreads to the Tabata area and mountainous areas, stink bugs and ants that invade indoors from the outdoors. In addition to mosquitoes, millipedes, grasshoppers, and barley beetles, the damage and complaints of unpleasant pests such as hornworms and chatterworms that inhabit indoors are increasing.

With respect to controlling and killing unpleasant insects, pyrethroids and other insecticides and insecticides have been used so far.
In Non-Patent Document 1, stink bugs are one type of unpleasant pests, whereas stink bugs are used to remove the invading individuals using a permethrin-containing heat transpiration agent or a smoke agent after entering the house. It describes how to get rid of it before invading it. Specifically, with respect to four types of house-invading stink bugs, commercially available pyrethroid insecticides (cyphenothrin, phenothrin, permethrin), organophosphorus insecticides (fenthion, fenitrothion, diazinon) and carbamate insecticides (propoxles) As a result of investigating the sensitivity by a continuous and limited time contact method, it is described in the same literature that pyrethroid insecticides, particularly cyphenothrin aqueous suspensions, were excellent in both rapid and residual effects.

  Patent Document 1 contains (4-ethoxyphenyl) [3- (3-phenoxy-4-fluorophenyl) propyl] (dimethyl) silane (hereinafter referred to as “silafluophene”) and a pyrethroid insecticide. Describes a stink bug control agent for houses characterized in that is a liquid agent or an aerosol agent.

  Non-Patent Document 2 describes that, as a result of a test for controlling Scott stink bugs with a permethrin 5% smoking agent, the drugs showed a good flushing effect on Scott stink bugs after entering the house.

  Patent Document 2 discloses 5-methoxy-3- (o-methoxyphenyl) -1,3,4-oxadiazol-2 (3H) -one (hereinafter referred to as “methoxadiazone”) and isobonyl thiocyanoacetate as active ingredients. It is described that the insecticidal and acaricidal composition contained therein is effective for various mites, sanitary pests, and living pests (unpleasant pests).

  Patent Document 3 describes an insecticidal aerosol composition in which a propellant is added to an insecticide stock solution containing methoxadiazone and methyldiglycol and ethanol for the purpose of improving the diffusibility of the drug. In addition, the literature describes that the insecticidal aerosol composition is effective against various sanitary pests, clothing pests, stored grain pests, and unpleasant pests.

However, each of the above insecticides cannot always be said to give satisfactory results for controlling and killing unpleasant insects such as stink bugs.
For example, about 50 kinds of indoor invading stink bugs are known in Japan, and many of them invade indoors due to wintering, causing odor problems. Since it is difficult to take measures against the source of these indoor invading stink bugs, a residual coating method (Non-Patent Document 1) before intruding indoors is known. Moreover, as a coating aerosol, a control agent (Patent Document 1) in which silafluorfen and a pyrethroid compound are blended and a pyrethroid-blended aerosol are known. However, these residual coating agents are effective when the stink bug is in contact with the coated surface with the legs. Since the contact amount is small, a sufficient effect is not necessarily obtained. In addition, although a method using a permethrin-containing smoke as a countermeasure after invasion indoors has been reported (Non-Patent Document 2), although pyrethroids have high knockdown activity, it takes time from knockdown to death. There was a problem that resuscitation was accepted.

On the other hand, methoxadiazone is known to be active against resistant German cockroaches and indoor dust mites, but the effect on stink bugs is described in Patent Document 2 and Patent Document 3 in which the target pests are listed. However, it has not been known at all to use a combination of methoxadiazone and pyrethroid for stink bugs.
Sanitary animals, Vol. 45, no. 3, p239-244 JP-A-8-59143 The Doueken bulletin, Vol. 28 (1978) pp. 43-45 JP-A-6-199615 JP 2000-95617 A

  The present invention solves the above-mentioned problems of the prior art, and provides a pest control / insecticidal composition for unpleasant pests that has both a fast effect and a lethal effect, and an insecticidal method using the same. is there. In particular, it is to provide a control / insecticide for stink bugs that invade and inhabit indoors, and a control / insecticide method using the same. At the same time, it also has unprecedented control and killing effects against unpleasant pests that invade and inhabit indoors such as tobacco beetles, scallops, ants, cormorants, rotifers, centipedes, geese, millipedes, etc. An object is to provide an insecticide and a control / insecticidal method.

  As a result of intensive studies in order to solve these problems, the present inventors have a high control and insecticidal effect that cannot be predicted from the effects of each methoxadiazone and pyrethroid compound when mixed. I found out. These compounding agents are already known to be effective against pyrethroid-resistant cockroaches (Japanese Patent Application Laid-Open No. 59-227806) and indoor dust mites, but are effective against harmful insects such as stink bugs and beetles. Was not known at all. In general, it is difficult to predict the efficacy of insecticides against taxonomically related species.For example, in the case of house dust mites and spider mites, which are agricultural pests, both of them are related. May vary greatly. Therefore, just because the composition of the present invention is effective against cockroaches and indoor dust mites, it was completely unexpected that it would be effective against stink bugs and beetles. The present invention has been completed based on such findings.

That is, the present invention provides a pest control and insecticidal composition for unpleasant pests, which comprises methoxadiazone and a pyrethroid compound as active ingredients.
The present invention also provides a method for controlling and killing unpleasant pests, characterized by using the above composition.
Furthermore, the present invention provides a control / insecticide for smoking-type unpleasant pests, comprising the above composition.
In addition, the present invention provides a method for controlling and killing unpleasant pests, characterized by using a smoke composition.

  When controlling and killing pests and other unpleasant pests that actually invade and inhabit indoors, such as stink bugs, using the control and insecticidal composition of the present invention, a space treatment such as a smoke agent, a heat transpiration agent, a total spray aerosol agent, etc. It is desirable to use an agent, but it can also be used as a residual coating agent such as an aerosol agent, an oil agent, an emulsion, or an insect treatment agent. However, it is not limited to these dosage forms. Among them, the most preferable dosage form is a smoking agent having a high reachability to the gap. When the control / insecticidal composition of the present invention is used as a smoking agent, a heating element using a heat of reaction between calcium oxide and water, or a heating element with a match head is used. It can be applied to any system such as one that causes a self-decomposing reaction of an exothermic base. The pyrethroid to be blended in the composition of the present invention is preferably phenothrin, permethrin, d, d-T-cyphenothrin, and other examples include etofenprox, phthalthrin, allethrin, prareslin, pyrethrin, bifenthrin, cyfluthrin and the like. It is not limited to. In addition, those in which optical isomers exist are all included. Moreover, you may combine suitably the other insecticide, disinfectant, etc. with the composition of this invention.

When the control / insecticidal composition of the present invention is used as a smoke agent, it is a powder, granular or solid smoke agent containing the control / insecticide composition of the present invention, a smoke base, and a combustion aid. And smoke by direct or indirect heating. The smoke agent preferably further contains additives such as a stabilizer, a binder, and an excipient as other components. Smoking bases include foaming agents such as azodicarbonamide, p, p'-oxybis (benzenesulfonylhydrazide), N, N'-dinitrosopentamethylenetetramine, azobisisobutyronitrile, nitrocellulose, nitroguanidine Exothermic agents such as guanidine nitrate, ammonium nitrate, potassium chlorate, etc., and combustion aids added to this include zinc stearate, magnesium stearate, zinc oxide, magnesium oxide, zinc carbonate, calcium carbonate, urea, etc. Can be mentioned. Furthermore, stabilizers such as sorbitan fatty acid ester, dibutylhydroxytoluene, butylhydroxyanisole, propyl gallate, epoxy compounds (epoxidized soybean oil, epoxidized linseed oil, etc.), methylcellulose, ethylcellulose, carboxymethylcellulose, hydroxypropylmethylcellulose, Hydroxypropyl cellulose, starch, dextrin, hydroxypropyl starch, gelatin, polyvinyl alcohol, polyvinyl acetate, polyvinylpyrrolidone, sodium polyacrylate, binders, clay (hydrous aluminum silicate), talc, diatomaceous earth, kaolin, bentonite, white carbon And a mixture of excipients such as calcium carbonate. The content (total) of methoxadiazone and pyrethroid compound in the smoke composition is preferably 2% to 30%, particularly preferably 5% to 15%. In addition, it is desirable to treat the smoke in the range of 0.125 g to 1 g / m ³ per smoke agent (the drug concentration when the volatilization rate is 70% is 15 mg / m ³ or more, and further 20 mg / m ^3. It is desirable to be above.)
The solvent for the stock solution of the total injection aerosol of the present invention includes methanol, ethanol, acetone, glycol ether solvents (ethylene glycol and derivatives thereof, diethylene glycol and derivatives thereof, other alkylene glycols and derivatives thereof), propylene carbonate, dimethyl carbonate , N-methylpyrrolidone, N-ethylpyrrolidone, γ-butyrolactone, methyl lactate, ethyl lactate, dibutyl lactate, kerosene, water, etc., as propellant, liquefied gas (dimethyl ether, liquefied petroleum gas, fluorocarbon), compressed Examples thereof include gas (carbon dioxide gas, nitrogen gas, nitrous oxide, etc.), a mixture thereof, and the like. Moreover, as long as the effect of this invention is not disturbed, other ingredients, such as a fragrance | flavor and a pigment | dye, may be mix | blended with each dosage form and form as needed, and are not restrict | limited at all.

  The control / insecticidal composition of the present invention includes the stink bugs such as scorpion stink bugs, scots stink bugs, mark stink bugs, spotted stink bugs, hornbill stink bugs, stink bug stink bugs, stag beetles, etc. Chatterworms such as Chatate, Katsushichateate, ants such as Himeari, Himeari, Hayaari, Amimeari, Tobirokeari, Black-tailed ants, etc. Effective against unpleasant pests.

  In the control and insecticidal composition of the present invention, the mixing ratio of methoxadiazone and pyrethroid compound used as active ingredients is not particularly limited, but methoxadiazone: pyrethroid compound is 1: 0.2 to 1: 4, preferably 1: 0. The range of 4 to 1: 1.4 is preferred.

EXAMPLES Hereinafter, although an Example, a comparative example, and a test example demonstrate this invention concretely, this invention is not limited to these Examples.
A smoke composition having a formulation as shown in Table 1 was produced. In these productions, a predetermined amount of each prescription component is weighed, sufficiently mixed and stirred with a kneader, then added with water, kneaded, granulated using a granulator with a die diameter of 2 mm or 3 mm, and dried. A sample was obtained.

表２に記載の組成のものを、エアゾール容器に充填し、全量噴射型エアゾール剤とした。

An aerosol container was filled with the composition shown in Table 2 to obtain a total injection type aerosol agent.

粒度分布の測定
実施例１で作成したくん煙剤と全量噴射型エアゾールの、使用空間における粒度分布をレーザー回折式粒度分布測定装置によって測定した。

Measurement of particle size distribution The particle size distribution in the use space of the smoke agent and the total amount injection type aerosol prepared in Example 1 was measured by a laser diffraction type particle size distribution measuring apparatus.

粒度分布を比較すると、くん煙剤は、エアゾールタイプに対して散布薬物粒径が有意に小さく、またくん煙剤の勢いも加わることにより薬剤の間隙到達性が高くなり、部屋の隙間に潜むカメムシ等の害虫に効果をより発揮しやすい利点がある。

Comparing the particle size distribution, the smoke agent has a significantly smaller sprayed drug particle size than the aerosol type, and the momentum of the smoke agent is added to increase the reachability of the drug. There is an advantage that it is easy to exert the effect on the pests.

Test Example 1 : Effect on wedge beetle Using the smoking granules prepared in Example 1, a medicinal effect evaluation test on wedge beetle was performed. Eight beetle bugs were placed in a 9 cm diameter waist-high petri dish and covered with 100 mesh nylon mesh, and placed in two places on the bottom of an acrylic chamber (65 × 65 × 120 cm) having a volume of 0.5 m ³ . Reagent agent 0.5g was heated with a hot plate (350 ° C.) and sealed for 1 hour. Four hours after the end of treatment (immediately after opening the chamber), and thereafter, every day, the state of the test insects was observed separately for survival, overturning, and death until 4 days later.
Results The results are shown in Table 4. In the case of the methoxadiazone simple agent of Comparative Example 1, 93.8% survived 4 hours after the treatment, but Example 1 of the present invention showed 100% inversion. In Comparative Example 2, the mortality rate after 4 days was 18.8%, but in Example 1 of the present invention, the mortality rate was 93.8%, and Example 1 of the present invention had a rapid action and high lethal efficacy. It was shown that it is a composition having both.

Test Example 2 : Effect on tobacco beetle Using the smoke granules prepared in Example 1 and Example 2, a medicinal effect evaluation test on tobacco beetle was performed. 10 cigarette beetles were placed in a 9 cm diameter waist-high petri dish and covered with 100 mesh nylon mesh, and placed in two places on the bottom of an acrylic chamber (65 × 65 × 120 cm) having a volume of 0.5 m ³ . Reagent agent 0.5g was heated with a hot plate (350 ° C.) and sealed for 1 hour. Immediately after the end of treatment (immediately after opening the chamber) and 2 hours later, the state of the test insects was observed separately for survival, overturning and death.
Results: The results are shown in Table 5. Two hours after the end of the treatment, the mortality rates in Comparative Examples 1, 2, and 3 were 20%, 0%, and 10%, respectively, whereas 70% in Example 1 and 50% in Example 2. was gotten. These show that the composition of the present invention is not an additive effect of the effects of each single agent but a synergistic effect.

Effect on peanuts Using the smoking granules prepared in Example 1 and Example 2, a medicinal effect evaluation test on peanuts was conducted. Place 10 individuals in a 9 cm diameter waist-high petri dish and cover with nylon net (100 mesh) on the bottom of an acrylic chamber (65 × 65 × 120 cm) with a volume of 0.5 m ³ . 25 g was heated with a hot plate (350 ° C.) and sealed for 1 hour. Two hours after the end of the treatment, the death rate / mortality of the test insects was calculated.
Results: In the smoke granules of Example 1 and Example 2 of the present invention, a high lethal effect that could not be predicted from the effect of the smoke granules of the comparative example was shown against ants such as red ants (Table 6). .

Effect on Cardan Beetle Using the smoking granules prepared in Example 2, a medicinal effect evaluation test on Okadama beetle was performed. Placed in reluctance dish having a diameter of 9cm and Armadillidium vulgare eight individuals, those capped with nylon net (100 mesh), placed in an acrylic chamber (65 × 65 × 120 cm) bottom volume 0.5 m ^3, test drug 0.25 g was heated with a hot plate (350 ° C.) and sealed for 1 hour. Immediately after the end of treatment (immediately after opening the chamber), the mortality of the test insect was calculated.
Results: The smoke granules of Example 2 of the present invention showed a high lethal effect that was unpredictable from the effect of the smoke particles of the comparative example against dandelion (Table 7).

［発明の効果］

[Effect of the invention]

  The control / insecticidal composition for unpleasant pests, characterized by containing methoxadiazone and a pyrethroid compound, has both unprecedented rapid and lethal effects against unpleasant pests such as stink bugs. Can be effectively controlled.

Claims (7)

A smoke-type pesticide / insecticidal composition for one or more types of unpleasant pests, selected from stink bugs and cardworms , comprising methoxadiazone and a pyrethroid compound as active ingredients.   The smoke control / insecticidal composition according to claim 1, wherein the pyrethroid compound is at least one selected from phenothrin, permethrin, and d, dT-cyphenothrin.   The smoke control / insecticidal composition according to claim 1 or 2, wherein the blending ratio of methoxadiazone and pyrethroid compound is in the range of 1: 0.2 to 1: 4. A method for controlling and / or killing one or more types of unpleasant pests selected from stink bugs and grasshoppers, characterized by using the smoke-type controlling and insecticidal composition according to claim 1.   The method for controlling and / or killing insects according to claim 4, wherein the pyrethroid compound is at least one selected from phenothrin, permethrin, and d, d-T-cyphenothrin.   The method for controlling and / or killing insects according to claim 4 or 5, wherein the compounding ratio of methoxadiazone and pyrethroid compound is in the range of 1: 0.2 to 1: 4. A smoke-type insecticide / insecticide for one or more types of unpleasant insects selected from stink bugs and cardworms , comprising the smoke-type insecticide / insecticide composition according to claim 1.