Cutter Backwoods Insect Repellent is ideal for prolonged outdoor activities, with a formula that repels insects up to 10 hours. The sweat-resistant aerosol spray formula provides long-lasting protection against mosquitoes and other biting insects. This 25 percent DEET formula repels mosquitoes, including those that may transmit the Zika, West Nile, Dengue and Chikungunya viruses. Cutter Backwoods Insect Repellent wards off other annoying insects, too, including ticks, biting flies, gnats, no-see-ums, chiggers and fleas. The aerosol spray is perfect for hiking, camping and other activities you like to do in the great outdoors. For outdoor use only. Read entire label before use. Cutter insect repellents have been helping families have fun together outdoors for more than 50 years. Goodbye mosquitoes. Hello, summer! This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.