Arm & Hammer Refillable Moisture Absorber and Odor Eliminator attracts and traps excess moisture, eliminating musty odors This refillable tub is a convenient, effective way to prevent humid stale air from causing unpleasant odors in your home, office or storage space Ideal for use in closets, laundry rooms, and mud rooms, where excess moisture and stagnant air are a nuisance These 14-ounce tubs offer long lasting freshness for up to 60 Days. Duration will vary based on temperature and humidity To use, simply remove plastic lid, peel off foil cover and replace the lid. Once the moisture absorbing crystals have fully dissolved, discard the remaining water and refill for long-lasting freshness