Hand-made with essential oil blend consisting of citronella, lemongrass, lime citronella, vanilla, and lemon eucalyptus. Smells good to humans but not so much for bugs! When your insect-repelling needs are serious, this gallon of spray is an economical way to refill your bug spray bottles. Repels mosquitos, gnats, ticks, black flies, fruit flies, and no-see-ums. Approx. 4 hour application time.