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防治小菜蛾田间小区药效试验结果表明：２０％硫双威和２０％双威菊酯可湿性粉剂在小菜蛾幼虫２～３龄期进行防治，均有较好的防效。每亩用１００克２０％可湿性粉剂校正防效在６６％以上，持效期可达７天以上，两者药效和持效优于或接近每亩６０克１０％氯氰菊酯。
The results showed that 20% thiosulfan and 20% permethrin WP could be used to control the 2nd-3rd instar larvae of Plutella xylostella, all of them had better control effect. 100 grams of 20% per mu with wettable powder calibration control effect of more than 66%, lasting more than 7 days, both efficacy and persistence better than or close to 60 grams per mu 10% cypermethrin.