Works by emitting a scent of all natural, plant-based essential oils. Scent masks the odors humans emit that attract insects. Effectively makes you smell like a plant and invisible to insects. Lasts for 200 hr. Each sticker protects an area of 4 to 6 ft. Repellent is formulated with 100% natural oils such as lemongrass, geraniol and citronella. Contains 5 stickers.