A concentration of 2% "Strobane" with knockdown agents and synergists will produce a highly effective aerosol formulation for use against both flying and crawling household pests. The following are typical aerosol formulations Propellants/85.0 Technical Piperonyl Butoxide/0.8 Petroleum Distillate/12.0 Pyrethrins/0.2 "Strobane"/2.0