Insecticidal compsn. with enhanced activity - comprise 2,4-di:oxo-1-(2-propynyl)-imidazolidin-3-yl-methyl chrysanthemate and a 16-carbon carboxylic acid ester

摘要

An insecticidal compsn. comprises: (a) 2,4-dioxo-1-(2-propynyl) imidazolidine-3-ylmethyl chrysanthemate; (b) at least one mono- or di- 16-19C carboxylic acid ester; and (c) opt. one inert carrier. The ratio of (a):(b) is 3-1:1-100. Pref. (b) is dibutyl phthalate, isopropyl palmitate, isopropyl myristate or hexyl laurate.