7 hours of protection. DEET is released in a controlled measured manner. Formula provides the highest degree of protection against vector borne diseases such as Dengue Fever, West Nile Virus and Lyme disease. It is also effective protection from mosquitoes, ticks, chiggers, fleas, gnats, no-see-ums and multiple kinds of flies.   #18-794-4oz UNSPSC#10191509