Repel 6.5 oz. Clothing & Gear Spray Permethrin Insect Repellent. It contains 0.5% Permethrin and repels and kills mites, ticks, and mosquitoes, including those that may carry the West Nile virus. This odorless spray can be applied to both clothing and gear such as backpacks, tents, and sleeping bags for protection, lasting up to 2 weeks. Comes in aerosol can.