There is provided a method for controlling the larvae of heel flies which parasitize ruminants and other warm-blooded animals by administering to said animals an effective amount of an unsubstituted or substituted phenylene bis[imino(thio)carbonyl]diphosphor(thio)amidic acid ester.
提供了一种控制寄生在反刍动物和其他温血动物身上的踵蝇幼虫的方法,该方法是向这些动物投与一定量未取代或取代的苯基双[亚
硫(
硫)羰基]二
磷(
硫)酰胺酸酯。