animal an effective amount of 4-tert -butyl ether or phenethyl quinazolin-4-yl 4 chloro-5- ethyl-2- methyl -N - [(4-3 -tert- butylphenyl) methyl ] pyrazole- 3-carboxamide or 5-Chloro -N- [2- a [4- (2- ethyl ) -2,3- dimethylphenoxy ] ethyl ] -6- ethyl -4- pyrimidin- amine or 4-chloro-3- ethyl-1- methyl -N- [4- (p- tolyloxy ) benzyl ] pyrazole -5 in vitro method for controlling parasites that infect companion animals and livestock animals by applying carboxamide is described .동물에게 유효량의 4-3급-부틸페네틸 퀴나졸린-4-일 에테르 또는 4-클로로-5-에틸-2-메틸-N-[(4-3급-부틸페닐)메틸]피라졸-3-카복스아미드 또는 5-클로로-N-[2-[4-(2-에톡시에틸)-2,3-디메틸페녹시]에틸]-6-에틸-4-피리미딘아민 또는 4-클로로-3-에틸-1-메틸-N-[4-(p-톨릴옥시)벤질]피라졸-5-카복스아미드를 적용함으로써 반려 동물 및 가축 동물을 감염시키는 체외기생충을 방제하는 방법이 기재된다.
