Plant-based. Deet free. Repels mosquitoes that may carry zika virus, West Nile virus and dengue virus. Repels mosquitoes for up to 6 hours. Murphy's Naturals lemon eucalyptus oil insect repellent goes on easy with a cool, refreshing scent. This unique, plant-based active ingredient repels mosquitoes, including those that may carry zika virus, West Nile virus, dengue virus and chikungunya virus, for up to six hours. Powered by Citriodiol nature's repellent. If empty: Nonrefillable container. Place in trash or offer for recycling if available. If partly filled: Call your local solid waste agency or 1-800-CLEANUP for disposal instructions. Never place unused product down any indoor or outdoor drain.