REPELS: Create a barrier against mosquitoes, including those that may transmit the Zika, West Nile, Dengue and Chikungunya viruses, ticks, gnats, biting flies, chiggers and fleas. CONTAINS 40% DEET: Provides long-lasting protection in the great outdoors - this is one of the highest DEET concentrations available in an aerosol. DEVELOPED FOR OUTDOOR ENTHUSIASTS: Especially for campers, backpackers, golfers, hunters, bikers, hikers, joggers, ball players and others who are active outdoors.