Wildlife Research Scent Killer 24/24 Combo - 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 New - Super Charged Scent Killer® to be even more effective! For Clothing and Boots. Totally Odorless. Now more effective than ever. 48 oz99 percent Effective at stopping replicated human odor in testing at Rutgers UniversityHighly effective on a wide variety of odorsContinues to work for days after dryingWhen fully treated, your hunting clothes can effectively become a high powered scent elimination suite.