Arm & Hammer Hanging Moisture Absorber and Odor Eliminator Bags are non-electric dehumidifiers that keep your small rooms and closets smelling fresh. These hanging dehumidifier bags eliminate musty odors and freshen air with the power of baking soda. They offer 15% more moisture absorbing power compared to the leading brand. Long-lasting freshness up to 60 days depending on temperature and humidity. These humidity absorber bags are ideal for closets, laundry rooms, mud rooms, bathrooms or anywhere excess moisture and stagnant air are a nuisance. Just hang them up, no electricity required. When the bag is full of water, dispose in trash and replace with a fresh one. Not for use in moving vehicles. Keep out of reach of children. Do not allow product to contact leather or metal.