Adventure Medical Kits Ben's 30 Deet Tick & Insect Repellent Pump Spray. 30% DEET offers protection from ticks and insects that may carry West Nile Virus (WNV), Lyme disease, Malaria, Eastern Equine Encephalitis (EEE), and other infectious diseases. Provides up to 8 hours of effective protection. Unique water based formula is made to evaporate slowly - so repellent stays on longer with little absorption into the skin. Fragrance free. 4 oz. size is great for base camp, at-home use or car camping.