FootMatters Odor Fighters Shoe Deodorizer Balls keep areas smelling fresh & clean. Great For Shoes, Boots, Gym Bags, backpacks, closets, school, drawers, Lockers & Vehicles. Twist to activate fresh Vanilla Scent is a neutral scent for men and women. Twist allows you to limit scent to whatever potency you need and allows you to stop the scent when it is not needed, keeping the Odor Fighters lasting longer. Odor Fighters lasts for months, fighting longer than other air fresheners. Odor Fighters find nasty places where odors hide and work hard to fight all types of odors.