Room and Area Fogger kills adult and Pre-Adult Fleas, including flea eggs for up to 7 months. Also kills cockroaches, spiders, ants, and ticks, including deer ticks. Contains Pyrethrins, Permethrin, and an IGR (Insect Growth Regulator) which is an insect juvenile hormone that prevents the pre-adult flea from turning into an adult biting flea. For best results, treat all infested areas at the same time. Use one fogger for each 6,000 cubic feet (approx. 27 ft. x 27 ft. x 8 ft. ceilings) of unobstructed area. Use additional units for remote rooms or where the free flow of the fog is not assured.