The present invention relates to a method for producing a liquid non-aqueous emulsifi-able formulation comprising a pyripyropene pesticide of the formula I as defined below which is dissolved in an aromatic hydrocarbon or hydrocarbon mixture containing sur-factants, which stabilize the emulsion upon dilution with water: which method comprises the steps i) and ii) as described hereinafter: i) dissolving the at least one surfactant and the compound of formula I in the organ-ic solvent or solvent mixture to obtain a clear solution of the at least one surfac-tant and the compound of the formula I ii) heating the solution to a temperature of at least 40℃.本發明係關於一種用於製造包含如下所定義之式I之吡啶并吡咯烯(pyripyropene)殺蟲劑之液體非水性可乳化調配物的方法,該吡啶并吡咯烯殺蟲劑係溶解於包含表面活性劑之芳族烴或烴混合物中,其在用水稀釋後可以穩定乳液:該方法包括如後文中描述之步驟i)及ii):i)使至少一種表面活性劑及式I之化合物溶解於有機溶劑或溶劑混合物中,以獲得該至少一種表面活性劑及該式I之化合物之透明溶液;ii)將該溶液加熱達至少40℃之溫度。
