Baygon Insect Killer is formulated to provide fast killing power against flying and crawling insects found in and around the household. Kills: Flies, Mosquitoes, Small Flying Moths, Gnats, Fruitflies, Roaches, Wasps, Hornets, Yellow Jackets, Fleas, Roaches, Waterbugs, Silverfish, Firebrats, Crickets, Earwigs, Ants, Spiders, Centipedes, Millipedes, Sowbugs, Pillbugs and Carpet Beetles.