Scent-A-Way Bio-Strike odor control spray is a patented formula that is third-party lab proven to be twice as effective as any other hunting scent elimination formula available. Scent-A-Way Bio-Strike uses Nanoshield technology to increase molecular surface area for increased odor elimination efficiency. Atomized molecules attack bacterial and fungal odors, while continuing to fight and prevent odors even after application. A third party lab tested the Scent-A-Way Bio-Strike spray formula against leading competitors in the hunting scent control market and found Bio-Strike to be 2X as effective as the 2nd most effective competing formula. As the third step (Field) of the 3-step scent control system, Scent-A-Way field spray is a must for any big game hunter. Perfect for whitetail deer, mule deer, elk, moose, caribou and predator hunters.