Off! 4 oz. Deep Woods Dry Aerosol Insect Repellent. This long-lasting, non-oily, and non-greasy repellent provides up to 8 hours of protection from mosquitoes, ticks, biting flies, gnats, and chiggers. It contains 25% DEET, the recommended concentration for effective protection against these pests. Easy to apply on both skin and clothing, this unscented repellent won't interfere with your favorite fragrances.