The Expedition 50+ by Lifesystems has been formulated to provide maximum-level protection in heavily infested areas. It boasts a dual-action, high strength formula which combines DEET and pyrethroids. The effective repellent action of DEET wards off insects, and the natural bite inhibitor pyrethroids stops any insects that land on your skin from biting. Protection lasts for over 10 hours. It contains 50% DEET.Please note that high humidity can lead to excess sweating and a slightly reduced time on the skin.It can also be sprayed on cotton clothing, sweat bands or socks to help protect the user.It repels: Mosquitoes, midges, horseflies, sandflies, gnats, fleas, ticks and other biting insects.Not suitable for children.