(Chem Tech LTD) Dimethyl ether-based aerosol spray contains .5% pyrethrins plus 4.0% piperonyl butoxide for greater knockdown and effectiveness. Treats up to 1,000,000 cubic feet. Kills flies, mosquitoes, wasps, gnats, roaches, ants, crickets, spiders, and silverfish. For use in all livestock buildings, in egg and milk handling areas, restaurants, food plants, hotels, etc.