ranger ready picaridin 20% tick & insect repellent, scent zero deet-free bug spray, 24 oz. ranger ready repellents ranger ready picaridin 20% insect repellent provides safe and effective protection from mosquitos and ticks for 12 hours, while repelling biting flies, chiggers, gnats, sand flies, and no-see-ums for 8 hours. made in the usa, our fine-trigger bug repellent sprays are designed to provide 360-degree coverage in hard-to-reach spots. the deet-free insect repellent formula is the perfect solution for providing reliable protection from bugs, like mosquitos and ticks, known to spread vector-borne diseases.