EXTERMINATING METHOD OF FLY

PURPOSE:To exterminate flies growing in excrements without fear of environmental pollution, by incorporating an effective amount of an insecticidal compound obtained by reacting benzoyl isocyanate with pyridyloxyaniline in a feed for domestic animals or fowls. CONSTITUTION:An insecticidal effective amount, preferably 0.5-50mg based on 1kg feed, of a compound expressed by formulaI(X1 is H or F; X2 is F or Cl; X2 and X4 are H or Cl) is incorporated in a feed for domestic animals and fowls, including drinking water, to exterminate flies growing in excrements of the domestic animals or fowls. The insecticidal compound is obtained by reacting a benzoyl isocyanate expressed by formula II with a pyridyloxyaniline expressed by formula III, and N-(2,6-difluorobenzoyl)-N'-[4-(3-chloro-5-trifluoromethyl-2-pyridyloxy) phenyl] urea is cited as an example of the insecticidal compound. EFFECT:Reduced amount of the chemical and labor with early and accurate extermintion.