Wildlife Research 576 Scent Killer Autumn Formula, Quart and Spray Bottle Combo, 44 Total Fluid Ounces High-powered human odor elimination formula, blended with the scent of autumn woods and fields Very mild masking scent effect Over 99% effective at stopping replicated human odor in testing at Rutgers University Long term effectiveness; Use the complete Scent Killer System for maximum results 1 quart combo size comes with a filled 12 fluid ounce field bottle