Provides hours of effective protection from mosquitoes, gnats and biting flies (deer flies, sand flies, stable flies and black flies). Also repels ticks, chiggers and fleas from treated skin and clothing. OFF!® Insect Repellent II is not greasy, won't stain and resists perspiration. Non greasy. Sweat resistant. Wont stain and resists perspiration. Contains no CFCs or other ozone depleting substances.