Lifesystems Natural Plus 40 is a mid to high strength repellant & bite inhibitor. Formulated from a blend of natural plant oils derived from Lemon Eucalyptus plant, the active ingredient P-methane 3, 8 diol is proven by scientific research to repel mosquitoes, midges, horseflies, sand flies, gnats & ticks. This is combined with all natural pyrethrum which inhibits biting should they land on your skin. This Natural product is a great alternative for those who are sensitive to DEET, or those who wish to avoid chemicals. Repels mosquitoes, midges, horseflies, sandflies, gnats, fleas, ticks & other biting insects. Use for malaria-free areas.