synergistic insecticide preparations and method for preparation thereof.

摘要

Insecticidal compsn. comprises 3-phenoxybenzyl 2,2-dimethyl-3-((2,2-dimhlorovinyl)cyclopropane-carboxylate (I) together with a cpd. of formula (II), the ratio of (I): (II) being 1:0.5-1:20: (where n is 0 or 1; R1 is 1-6C alkyl or alkenyl; and R2 is 1-4C alkylene). The compsns. show synergistic insecticidal activity, and are used against insects and acarids on crops, and generally.