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笔者应用甲氧ＤＤＴ对山西省３个品系家蝇的毒力进行测定，对正常品系的ＬＤ＿（５０）为１．１７１８μｇ／♀，对太原品系的ＬＤ＿（５０）为３．８１６５μ／♀，对临汾品系的ＬＤ＿（５０）为３．１３３４μｇ／♀，表明该药剂比禁用的ＤＤＴ（对正常品系家蝇的ＬＤ＿（５０）为０．９５４８５μｇ／♀）毒力强，且未产生抗药性，具有一定的开发价值。
The author used methoxy DDT to determine the virulence of housefly in three strains of Shanxi Province. The LD50 of normal strain was 1.1718μg / ♀, while that of Taiyuan strain was 3.8165μ / ♀. The LD_ (50) of Linfen strain was 3.1334μg / ♀, indicating that the drug had stronger virulence and no resistance than the forbidden DDT (LD_ (50) of normal strain Musca domestica) Certain development value.