Wildlife Research Center Scent Killer Gold Spray Gallon/24 Combo Tested 99% effective at stopping replicated human odor 20 days after drying at Rutgers University Uses Hunt Dry Technology Plus + to work even after it dries Engineered with an advanced formula to combat odor at a molecular level Starts reducing odors immediately Can be used for instant odor reduction or allowed to dry Includes 24 fl. oz. field spray bottle and 1 gallon refill bottle