JPS5825356B2 - Anti-termite and rat-proof sandy soil treatment preparation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ant- and rodent-proof sandy soil treatment agent in which a coating of termite- and rodent-proofing resin or asphalt is formed on the surface of sandy soil particles.

Conventional soil treatment agents for controlling termites include emulsified insecticides that are emulsified, diluted with water, and mixed with soil, and powdered insecticides that are mixed with bulking agents such as talc. It is widely used to treat soil around the foundations of houses and under floors, and has a pest control effect.

However, when this soil treatment agent is used outdoors, the insecticidal ingredients are washed away by running water such as rainwater, which reduces the pest control effect, and the major disadvantage is that the washed-out insecticidal ingredients cause water pollution and soil contamination. Can be mentioned.

For this reason, there is a demand for the development of soil treatment agents that prevent active ingredients such as insecticidal ingredients from leaking out and contaminating others.

In recent years, termites have caused damage not only to wooden houses but also to electric wires and cables buried underground.

For example, railway signal 2 communication cables (PVC coated cables) are mainly installed outdoors in concrete troughs, but rats use the gaps in these troughs as passageways.
Cables that have been installed can be chewed by rats, causing problems with train operation.

As a countermeasure to these problems, filling the trough with sand and blocking the passage of rats has some preventive effect, but the number of cases in which the cables inside the trough are damaged by termites living in the sand and dirt has increased. The current situation is that the number of people is increasing.

In addition, the rat-proofing effect of sand filling is not necessarily perfect; there are cases where rats dig through the sand and chew on the cables. It has drawbacks such as being washed away by rainwater, and as such, no treatment agent has been developed that fully satisfies the purpose of controlling termites and rats.

This invention was made to improve the above situation.
The purpose of this is to ensure that the active ingredients are not washed away by rainwater, etc., so that the anti-termite and rodent control effects can be reliably exerted over a long period of time, and there is no risk of contamination of water or soil. The purpose of the present invention is to provide an anti-termite and rodent-proof sandy soil treatment preparation that can be used safely.

First, the present inventors have conducted extensive research to provide a treatment agent that eliminates the above-mentioned conventional drawbacks and is both termite and rat repellent. The invention is based on the fact that by mixing rat poison and then kneading it with sand, the drug is mixed into the resin or asphalt, increasing the effect of preventing the active ingredients from flowing out. Compared to existing soil treatment agents, it prevents environmental pollution and has long-lasting effects.

In addition, since the treatment formulation of the present invention mainly has sand as its core, the specific gravity is low.

Due to its particle size, it is easy to blend in when mixed with other untreated sand, and since resin and asphalt have a moderate viscosity, the sand adheres to the sand in a thin film based on the sand particle size. However, since it maintains a certain degree of hardness, it has the advantage of not being easily washed away by rainwater, etc., and is also effective as a rat repellent.

In addition, the insecticide used in this invention refers to a drug that has the effect of killing or repelling all insects, such as those that have a contact poison effect such as dieldrin, aldrin, and chlortin; As a repellent, consider the long-lasting effect, such as creosote oil,
Tributyltin chloride is effective.

Next, specific examples of the present invention will be described. First, preparations were manufactured according to Examples 1 to 4 below.

Practical formulation example 1 Mix 3 g of chlordane, 3 g of creonate oil, and 15 g of urethane resin varnish, and add river sand (particle size 0, 6 mrr) to this.
b ~ 1.2 mm) 1,000 g is kneaded to obtain a preparation.

Practical formulation example 2 Mix 10 g of Chlor 1 no 10 Ribten 2 0 0 0H (manufactured by Idemitsu Oil Co., Ltd.), and mix this with river sand (0.6 mm to 1.2 mm) 1.0
0 0 g to obtain a preparation.

Practical formulation example 3 Chlor 1 no 5 Chiltin chloride 5g, blown asphalt 85g
Mix by heating and mix this with river sand (particle size 0.6 mm to 1,
2 mm) and knead with 1,000 g to obtain a preparation.

Practical formulation example 4 Mix 5 blocks of Chlordef, 5 g of tributyltin chloride, and 40 g of polybutene 2000# (manufactured by Idemitsu Oil Co., Ltd.), and mix this with river sand (particle size 0.6 mm to 1.2 mm).
) 1,000 g to obtain a preparation.

Each sample 1 was prepared by immersing each of the preparations obtained in the above-mentioned Examples 1 to 4 in running water for 48 hours and then air drying.
-4, an insecticidal efficacy test was conducted using domestic termites, and a soil passage test was conducted using brown rats.The test methods and test results were as follows.

Note that this test is a weather resistance effect test assuming rainwater.

Insecticidal test method 60g of each of the above samples 1 to 4 was placed in a petri dish with a diameter of 10 crn.
They were collected, flattened, added with appropriate moisture, and 3 soldier termites and 10 worker ants were released on top of them in each area, and the insecticidal effect was observed over time.The results are shown in Table 1 below. Ta.

The experiment was conducted three times, and the average value is shown, and the numbers in Table 1 represent the number of insects that fell over.

As is clear from the insecticidal test results in Table 1 above, all termites fell within 3.5 hours with all formulations of the present invention, despite the leaching test with running water, showing no insecticidal effect. This shows that the active ingredients are not washed away by rainwater, and that the termite control effect can be sufficiently exerted over a long period of time, and that it does not pollute the environment.

Soil passage test for rats As shown in Figures 1 and 2, rat cages 2 and 3 were set on both sides of the U-shaped groove member 1, and each sample 5 was placed inside the U-shaped groove member 1. Close the lid 4, put a mouse and water in one cage 2, and put food in the other cage 3, and the mouse
Tests were conducted in which the bait was obtained by passing through the sample 5 in the groove member 1, and the test results were as shown in Table 2 below.

The test was conducted using two brown rats weighing around 250 g.

As is clear from the results of the soil passage test for rats shown in Table 2 above, rats can pass through the blank (sand only) in one day, but with Examples 1 and 2, they cannot pass through the soil for two days. In addition, Practical Formulation Example 3゜4 was completely unable to pass through, killing the rats, and was sufficiently effective. This shows that it is possible to sufficiently prevent passage.

As is clear from the above examples, the treatment formulation of the present invention is an anti-termite agent formed on the surface of sandy soil particles.

The rodent-repellent resin or asphalt coating does not run off due to rainwater, etc., and its active ingredients can be maintained for a long time, so it can fully demonstrate its anti-termite and rodent-repelling effects over a long period of time, and it also prevents insecticides from being washed away like conventional methods. Water pollution due to ingredients,
It can be used safely without causing soil contamination.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the instrument used for the rat passage test through the soil, and FIG. 2 is a perspective view of the same U-shaped groove member.

Claims (1)

[Claims] 1. Ant-proofing, characterized in that a thin film having anti-termite and rat-proofing properties is formed on the surface of sandy soil particles by kneading resin or asphalt containing an insecticide and a rat-proofing agent, and sandy soil.
Rodent-proof sandy soil treatment preparation.