JP2012097061A - Pest control agent and method for using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pest control agent with pests (an annelida population with Haemadipsa zeylanica japonica Whitman as the center and an invertebrate population) as the objects, which has excellent continuity and stability, exhibits excellent control effect, has no limitation of using form and has safety (particularly, high safety to the human body) like the one derived from a natural product, and to which the reduction in an environmental load can be expected, and to provide a method for using the same.SOLUTION: The pest control agent comprises one or more kinds of compounds selected from the group consisting of salicylic acid 2-hydroxyethyl or its analogs as an active ingredient(s). Further, higher effect can be obtained by incorporating terpenes represented by L-menthol or phenyl propanes represented by vanillin. The pest control effect as the above purpose can be achieved by spraying, applying or scattering the pest control composition to objects requiring pest control (such as footwear, clothes and the outer wall of housing) or directing contacting the same with pests.

Description

The present invention provides techniques relating to pest protection agents. More specifically, it contains one or more compounds selected from the group consisting of salicylic acid derivatives (2-hydroxyethyl salicylate, methyl salicylate, salicylic acid, etc.) as active ingredients, and in addition, terpenes or phenylpropanes. A pest control agent comprising a mixture that may be included and a method of using the same are provided.

Pests such as hills can cause blood damage to forest managers working on the devastation of satoyama.
Current control methods include commercially available insect repellent sprays, N, N-diethyl-m-toluamide (DEET), wood vinegar, salt, soap, anionic ring-shaped animal repellents.

However, DEET, which has higher repellent effect and practicality than wood vinegar and salt, is instructed by the American Academy of Pediatrics to extremely reduce the DEET content of insect repellents for children (Non-patent Document 1). Also, if you touch your hands, wash them with soap and water, and you may not be able to touch your skin.

Therefore, wood vinegar and citronella oil are listed as active ingredients for pest repellents that are safer and less environmentally burdensome than the insecticides mentioned above, but a large amount of spraying is required to confirm their repellent effects. (Non-patent document 2).

AAP News, Follow Safety Prescriptions When Using DEET on Children, June 2003

Kanagawa Prefecture Yamaville Countermeasures Joint Research Report, Kanagawa Prefecture Yamaville Countermeasures Promotion Council Secretariat, March 2009

The present invention is excellent in sustainability and stability, exhibits an excellent control effect, is not limited in use form, has safety (particularly high safety to the human body) as derived from natural products, and has an environmental burden. To provide a control agent for pests that can be expected to be reduced and a method for using the same. The pest described here is an annelid population and a flat animal population centered on Yamavir.

The pest control agent of the present invention is characterized by containing one or more compounds selected from the group consisting of 2-hydroxyethyl salicylate or an analogous compound as an active ingredient. Moreover, a higher effect can be obtained by including terpenes typified by L-menthol or phenylpropanes typified by vanillin. By spraying, applying, spraying or directly contacting the pest control composition (such as footwear, clothes, housing outer walls, etc.) with the pest control composition, it is possible to achieve the above-mentioned pest control effect. Can be achieved.

A pest population control agent comprising at least one salicylic acid derivative or a similar compound as an active ingredient is provided. Furthermore, a higher pest population control effect can be obtained by mixing natural organic compounds composed of terpenes or phenylpropanes. The control agent according to the present invention has a repellent effect as well as a repellent effect. In addition, since the control agent according to the present invention has a high drug holding power, it is effective in work in a forest with a lot of undergrowth and in the rain. In addition, it is intended to provide a simple usage method that can be easily used by children and persons with physical disabilities.

The pest control agent in the present invention contains, as an active ingredient, one or more compounds selected from the group consisting of salicylic acid derivatives (2-hydroxyethyl salicylate, methyl salicylate, salicylic acid, etc.), and other terpenes or It is a liquid or solid substance composed of a mixture that may contain phenylpropanes.

Salicylic acid derivatives that have been found to be effective in the present invention are salicylic acid, methyl salicylate, ethyl salicylate, and 2-hydroxyethyl salicylate. Of these, 2-hydroxyethyl salicylate was most effective. However, it is not limited to the above compounds.

Examples of the use of terpenes in the present invention include menthol and menthane, but are not limited to these compounds.

Examples of the use of phenylpropanes in the present invention include vanillin, but are not limited to these compounds.

Although mint oil was particularly effective as the origin of terpenes, it is not limited to this.

Vanilla extract was effective as a source of phenylpropanes, but is not limited thereto.

Although the pest control agent in the present invention exhibits a control effect without any particular processing, it can exhibit higher convenience by being in the form of a solution.

As a method for forming a solution, dissolution in an organic solvent, emulsification with a surfactant, or dissolution in water by embedding in a microcapsule is effective. As the organic solvent, ethanol and the like which are not harmful to the body are preferable.

The solution-like pest control agent in the present invention can be easily sprayed by enclosing it in a spray container with a spray nozzle and a valve together with a compressed gas for spraying. This pest control agent does not lose its control effect by spraying.

The pest control agent in the present invention is applied to absorptive objects such as paper, cloth, non-woven fabric and synthetic resin sheet, or gelled substances such as gelatin and agar, sprayed, poured, dipped, kneaded, added and solids such as soap and wax It is possible to release the control component gradually by mixing with oil or fat, kneading and the like.
By this method, the control effect can be easily maintained for a long time.

The pest control agent in the present invention is not harmful to animals and plants including human beings, and has a low environmental load because it mainly contains naturally derived components. Therefore, it can be applied to all living areas such as human or animal surfaces or footwear, clothes, machines, screen doors, glass, floors and walls. In addition, since the ingredients are stable for a relatively long period of time and have high drug retention, they are also effective in working in forests with a lot of undergrowth and in the rain.

The pest control agent in the present invention exerts a control effect even when it is brought into direct contact with a pest.
For example, a spray type pest control agent can be sprayed directly to obtain a control effect.

In the experiment method, a circle of 8.6 cm in diameter is written with a pencil in the center of A6 size copy paper, and a reagent is applied outside the circle. I placed a Yamabiru in the circle, and examined the repellent rate to see if it could come out of the circle. The reagent is dissolved in 100% ethanol.

An experiment was conducted in which 2-hydroxyethyl salicylate was applied outside the circle at concentrations of 3, 5, 10, 15, 30, 40, 50, and 100 mg / 1 ml. As a result, the repelling rate was 0, 30, 80, 100, 100, 100, 100 and 100%.

Terpenes (L-menthol) were applied to the outside of the circle at concentrations of 3, 5, 10, 15, 30, 40, 50, and 100 mg / 1 ml, and experiments were conducted. As a result, the repelling rate was 0, 0, 0, 10, 20, 50, 100 and 100%.

Phenylpropanes (vanillin) were applied to the outside of the circle at concentrations of 3, 5, 7.5, 10, 15, 30, and 40 mg / 1 ml. As a result, the repellent rate of Yamavir was 0, 10, 50, 80, 80, 80 and 100%.

Table 1 is a table showing the relationship between the concentration of 2-hydroxyethyl salicylate, methyl salicylate, salicylic acid, acetylsalicylic acid, L-menthol, vanillin and capsaicin and the repellent rate.

Experiments were conducted by applying 2-hydroxyethyl salicylate outside the circle at a concentration of 5 mg / 1 ml and vanillin 7.5 mg / 1 ml. The repellent rate was 100%. Moreover, it was 100% when the amount of components was increased.

The experiment was carried out by applying 2-hydroxyethyl salicylate outside the circle at a concentration of 5 mg / 1 ml and L-menthol 40 mg / 1 ml. The repellent rate was 100%. Moreover, it was 100% when the amount of ingredients was increased.

Table 2 is a table showing the relationship between the concentration of 2-hydroxyethyl salicylate, L-menthol, vanillin and capsaicin and the repellent rate.

(Comparative Example 1)
An experiment was performed in which 100% ethanol was applied outside the circle. The repellent rate was 0%. Therefore, ethanol is used as the organic solvent in which the reagent is dissolved.

Claims (11)

A pest control agent comprising one or more compounds selected from the group consisting of salicylic acid derivatives as active ingredients. The pesticidal agent according to claim 1, wherein the pesticidal agent according to claim 1 contains terpenes or phenylpropanes. The pest control agent according to claim 1, comprising a plant-derived component as a source of a salicylic acid derivative typified by methyl salicylate. The pest control agent according to claim 1, comprising mint oil derived from terpenes represented by L. menthol. The composition according to claim 1, comprising vanilla extract as a source of phenylpropanes typified by vanillin. The pesticidal composition according to any one of claims 1 to 5, which is a dispersion obtained by dispersing one or more volatile or odorous liquid or solid mixtures in an organic solvent. One or more liquid or solid mixtures that are volatile and emit odor are in the form of an aqueous solution in which they are embedded in microcapsule particles or dissolved with the aid of dissolution such as emulsification with a surfactant or the like. Item 6. The pest control agent according to any one of Items 1 to 5. The spray agent with which the pest control agent of Claims 1-5 was enclosed with the spraying nozzle and the container for spraying with a valve with the compressed gas for spraying. A pesticidal agent comprising an object impregnated for the purpose of gradual release of the pesticidal component according to claim 1. The pest control agent according to claim 1, wherein the pest control agent is applied to, sprayed on, or sprayed on a human body or animal surface or footwear, clothing, machine, screen door, glass, floor, wall or the like. The control method by making the control agent of Claims 1-5 contact a pest directly.