Repel Insect Repellent Sportsmen Max Formula 40% DEET repels mosquitoes, ticks, gnats, biting flies, chiggers and fleas. It provides effective, long-lasting protection. This formula is non-greasy and resists perspiration. It was developed especially for campers, backpackers, fisherman, hunters, golfers, bikers, hikers, joggers, ball players and active outdoor enthusiasts.