A method of combating pests which comprises applying to such pests or to a pest habitat a pesticidally effective amount of a 2-halogenoalkylthio-substituted pyrimidine of the formula ##STR1## in which R.sup.1 represents halogenoalkyl, R represents hydrogen, alkyl, alkylthio, alkoxy, halogenoalkyl, halogenoalkylthio, halogenoalkoxy, optionally substituted aryl or halogen and m represents a number 0, 1, 2 or 3. Those compounds other than 2-(difluoromethylthiomethylthio)-4,6-dimethyl-pyrimidine, 2,4-bis(difluoromethylthio)-6-methylpyrimidine and 4-(difluoromethoxy)-2-(difluoromethylthio(-6-methylpyrimidine are new.
一种对抗害虫的方法,包括向该害虫或害虫栖息地施加一种含有2-卤代烷基
硫代
嘧啶的
杀虫剂有效量的配方,该配方的
化学式为##STR1##其中R.sup.1代表卤代烷基,R代表氢,烷基,
硫代烷基,烷氧基,卤代烷基,卤代烷基
硫代基,卤代烷氧基,可选取代的芳基或卤素,m代表数字0、1、2或3。除2-(二
氟甲基
硫甲基
硫代)-4,6-二
甲基嘧啶,2,4-双(二
氟甲基
硫代)-6-
甲基嘧啶和4-(二
氟甲氧基)-2-(二
氟甲基
硫代)-6-
甲基嘧啶外,其它化合物均为新化合物。