Cutter Backwoods Insect Repellent features a 25% DEET formula that resists sweat to remain effective for up to 10 hours. Repels mosquitoes that may transmit Chikungunya virus, Zika virus, Dengue virus, and West Nile virus. Protects against ticks, chiggers, gnats, no-see-ums, fleas, and biting flies. Aerosol formula makes application easy and is perfect for prolonged outdoor activities.