Good question! Our MFZ product is one of the only 100% all natural insect repellents lab-tested to repel ALL mosquitoes, including the yellow fever mosquito. For use in yards, campsites, sporting events, hunting grounds, and other outdoor areas, Greenerways Mosquito FreeZone Vapor Repellent repels mosquitoes safely and naturally. It comes in a small pouch that you hang outdoors. You pour a cup of water into the bag, and in 2 hours, the entire 100-foot radius will be bug-free for a WEEK. No joke. Look at our reviews on Walmart and Amazon. This repellent WORKS is completely safe for your pets and children and is odorless. Whether traveling abroad, hiking, camping, or having BBQs in the backyard, this best selling mosquito repellent is non-toxic, unlike products that include DEET. Buy a pouch to try, and let us know how you liked it!