Scent-A-Way Bio-Strike Odor Control Spray is a patented formula thatis 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 & 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.