Just one whiff of human scent will send a deer into the next county. Successful hunters, those who really take their hunting serious, understand this and have come to rely on the scent elimination power of the Scent Killer System. Because of the exclusive, highly complex, scent fighting formula, it is common for a hunter using Scent Killer® to have deer walk within 20 feet, down wind and never be aware the hunter is there. When properly applied, Scent Killer can be extremely effective. Clothing can actually be treated weeks in advance, allowed to dry, and stored until hunting time. Thoroughly treated clothing can effectively fight human odor for many days of use.