One can treats up to 2,000 cu ft. Controls heavy infestations. Kills roaches, fleas, ants (except fire ants), spiders & other listed insects. Won't leave a wet, messy residue. Quick Facts: Works in 2 hours. Non-staining, no messy residue. Coverage: Each can covers 2,000 cu ft of unobstructed space (15.5 ft x 16 ft with 8 ft ceiling). Do not use in rooms 5 ft x 5 ft or smaller. Instead, allow fog to enter from other rooms. Kills: Ants (except Fire Ants), Brown Dog Ticks, Crickets, Firebrats, Fleas, Flies, Gnats, Houseflies, Mosquitoes, Palmetto Bugs, Roaches, Silverfish, Spiders, Waterbugs. Does not control Bed Bugs.