In order to obtain a) insecticidal solution, the present invention, the insecticidal solution in the presence of a surface active agent to form the steps of dissolving the insecticidal active ingredient in a water-miscible organic solvent, and b) an aqueous pesticide dispersion discloses include the steps of mixing with water, a process for the preparation of an aqueous pesticide dispersion. Furthermore, the method comprising diluting the aqueous pesticide dispersion of the present invention in water to obtain an aqueous pesticide dispersion is diluted, the invention comprises applying to the growth environment an effective amount of a dispersion is the diluted Also disclosed are methods for including and combating pests.本発明は、a)殺虫溶液を得るために、水混和性有機溶媒中に殺虫活性成分を溶解する段階と、b)水性殺虫分散体を形成するために界面活性剤の存在下で前記殺虫溶液を水と混合する段階とを含む、水性殺虫分散体の調製のためのプロセスを開示する。本発明はさらに、希釈された水性殺虫分散体を得るために水中で本発明の水性殺虫分散体を希釈することと、該希釈された分散体の効果的な量を生育環境へ適用することとを含む、有害生物を駆除するための方法も開示する。