With our market leading "quiet aerosol spray" that sprays in any position. The advanced barrier system separates the actual product from the propellant so it is quiet. Repels and kills mosquitoes, horse flies, stable flies, face flies, house flies, horn flies, deer flies and gnats. Konk products contains a proven safe, "natural" active known as pyrethrin because pyrenthrins are natural. Air guard products are safe for controlling flying insects and pests around the home.