Clean Air Purge III Time Mist Refill Cartridge Contains no CFCs or other ozone-depleting substances. Contains .975% Pyrethrins, 1.95% PBO and 3.05% MGK 264. Woodsy fragrance leaves no lingering insecticide odor. Targets flying insects including Flies, Mosquitoes, Gnats, Small Moths For use with the Time Mist Metered Aerosol Dispenser.