Prevents and solves problem caused by excessive humidity. Stop. Effective in areas of up to 160 sq. ft. 15 sq m. Moisture Absorber: Prevents and solves problem caused by excessive humidity (unpleasant smells, mold, stains on walls, corrosion, etc) anywhere in the house: closets, basements, bathrooms, garages, kitchens. Humdry Premium 15.9 oz (450 g) absorbs excess moisture from the atmosphere until the recommended relative humidity level of 50-60% is reached. The granules become more compact as they absorb moisture and once they are saturated, liquid collected from the air begins to drip into the bottom tray. Works without electricity or batteries. Duration of 1-3 months, depending on the temperature and humidity level. We support Africa. Keeping children in families. Made in Spain.