OFF! Deep Woods Tick Repellent Aerosol is formulated with 25% DEET, providing up to 8 hours of protection against ticks, mosquitoes, biting flies, gnats, and chiggers, so you can keep living life your way. This easy-to-apply aerosol insect spray defends against Lyme Disease, as well as mosquitos that may carry Zika virus. Keep out of reach of children and pets. See the label for other precautions and usage directions.