Keep your shoes and tactical boots fresh for up 60 days by fighting tough odors with Kiwi Deodorizer balls.  Works as a shoe odor Remover and tackles even the toughest, most stubborn odors to keep your shoes smelling fresh. Simple to use, just twist the sneaker deodorizer ball to open and activate, then place one ball inside each shoe or military boot.  Use this shoe freshener with any type of shoe, including those made of full grain and patent leather, synthetic and faux leather, canvas, suede, nubuck, mesh, nylon and fabric.