Wildlife Research Center"s Scent Killer - Super Charged is an odorless human scent elimination formula. Wildlife has done extensive field and lab testing on Scent Killer with amazing results. In fact, Scent Killer was found to be over 99% effective at stopping replicated human odor in testing at Rutgers University! Our latest results show our Super Charged Scent Killer to be even more effective! 24 fluid ounces in a trigger spray bottle.