There is provided an oil-suspension concentrate of an agrochemically activeproduct,comprising: (A) imidacloprid； (B) at least one pyrethroid selected from thegroup consistingof beta-cyfluthrin and deltamethrin； (C) at least one penetrant； (D) at leastone vegetable oil；(E) cyclohexanone； (F) at least one nonionic surfactant, at least one anionicsurfactant or amixture thereof； and (G) one or more additives selected from the groupconsisting of anemulsifier, a foam inhibitor, a preservative, an antioxidant, a spreader, acolorant, a thickenerand a mixture thereof. A process for producing the oil-suspension concentratecomprisesmixing (A) to (G) with one another and then grinding until an average particlesize of lessthan 10 µm is reached. Also provided is a method of controlling harmfulorganisms byapplying the oil-suspension concentrate to the insects or their habitats.
