We are Exporting, Importing, Distributing, Trading and Supplying Pyrethroid Imiprothrin Oil Based Aerosol in Shijiazhuang, Hebei, China. Biological efficacy of iniprothrin oil-based aerosol formulation against cockroaches. Pyrethroid Imiprothrin is pyrethroid insecticide. It is an ingredient in some commercial and consumer insecticide products for indoor use. It has no toxicity against mammals, but can effectiy to control flies. It is effective against cockroaches, waterbugs, ants, silverfish, crickets and spiders, among others.