Provided is an insecticidal composition comprising between 22 % and 25 % by weight thiamethoxam and between 15 % and 18 % by weight of bifenthrin. It has been found that the specific weight ratio of thiamethoxam and bifenthrin exhibits a hitherto unknown and surprisingly strong synergistic effect on controlling insects which outranges previously reported effects of said combination of insecticides.提供一種殺昆蟲組合物,其包含22-25重量%的賽速安和15-18重量%的畢芬寧。已發現,該特定重量比的賽速安和畢芬寧對控制昆蟲顯示至今未知且令人驚異的強協同效應,超過了之前報導的所述殺蟲組合物的效果。
