Method for preventing termites and microencapsulated organophosphorus termite controlling composition

摘要

Termites are prevented by applying thereto microencapsulated organophosphorus termite controlling composition in an amount of 5-100 g as an effective ingredient. The composition comprises an organophosphorus insecticidal compound encapsulated in a microcapsule formed of a polyurea or polyurethane wall and having an average particle diameter of not more than 80 mu m, a wall thickness of 0.1-1 mu m, and a value of the average particle diameter/wall thickness of 20-400.