The Wildlife Research Center Coyote Urine Cover Scent masks human scent on predator hunters. This strong natural odor not only masks human scent, but it also can trigger competitive behavior in wild coyotes. The natural coyote urine has a very strong, natural odor that deceives coyotes. You can smell the difference. Comes in 4 oz. amber bottle. Masks human scent on predator hunters Triggers competitive behavior Strong natural odor