Repel Insect Repellent Sportsmen Max Formula 40% DEET repels mosquitoes, ticks, gnats, biting flies, chiggers & fleas. A tough repellent for any adventure, this repellent contains 40% DEET and is designed specifically for outdoor enthusiasts exposed to the toughest conditions. Repels mosquitoes that may transmit the Zika, West Nile, Dengue and Chikungunya viruses. The convenient pocket-size pump stores nicely in your pocket, with outdoor gear or in your backpack. Take it anywhere for effective, long-lasting protection. DEET has been used as an insect repellent in the United States for more than 50 years. It's recommended for those spending longer periods of time outdoors, in more heavily infested conditions. Recommended by the Centers for Disease Control and Prevention for effective, long-lasting protection against mosquitoes, DEET is also an effective repellent for ticks.