A method of combatting insect pests at locations where fish are or are likely to be present in which a composition containing a compound of formula:
where R1 is haloalkyl, R2 is haloalkyl or halo, X is hydrogen or cyano and Y is halo is used in an amount which is insecticidally effective but non-toxic to fish. The compounds where X is cyano have not been previously been described. A typical compound is that where R1 is trifluoromethyl, X is cyano and R2 and Y are both chloro.
一种在有鱼或可能有鱼的地方防治害虫的方法,其中包含一种式化合物的组合物:
其中 R1 是卤代烷基,R2 是卤代烷基或卤代,X 是氢或
氰基,Y 是卤代,其使用量对鱼类杀虫有效但无毒。X 为
氰基的化合物以前没有描述过。一种典型的化合物是 R1 为三
氟甲基,X 为
氰基,R2 和 Y 均为
氯基。