I’ve trapped hundreds of these guys over the years. I know quality fox urine and the benefit it has in covering human odor. I use only strong, pure, quality red fox urine that comes from mature animals on well-balanced meat fed diets. I continuously search the U.S. for top quality fox urine. Fox Plus is a super cover scent while in a treestand, ground blind, or for covering your entry trail. Works great with NO SCENT SPRAY.