The Arm & Hammer Disposable Moisture Absorber and Odor Eliminator 14-ounce tub is your convenient solution for continuous cleaner fresher air. This musty odor eliminator works by attracting and trapping excess moisture to maintain an optimal humidity level. It works as an odor absorber, shoe deodorizer, or room freshener where moisture is an issue. To use this odor eliminator, simply remove lid, peel off foil cover leaving white safety cover in place, replace grill lid, and place in area where excess moisture or stale odor is a problem. Discard once moisture absorbing crystals have fully dissolved. This automatic air freshener works like a dehumidifier but without electricity or batteries. Just place where there is moisture or a stale smell and watch as the odor-causing water collects inside the container. Keep out of reach of children. Read and follow all label directions.