One application of maximum strength 100% DEET repellent protects you from biting insects, including mosquitoes and ticks, for up to 10 hours. Used by utilities, railroads, park crews and foresters. Formulated not to sweat off and no scent added. One bottle lasts as long as three typical aerosol cans. Works against mosquitoes, black flies, fleas, no-see-ums, ticks, deer flies, gnats, sand fleas, chiggers, horse flies and non-swarming bees. Convenient 2-ounce spray bottle fits in your pocket or work pack.