Esther Natural Activated Charcoal Air Purifying Bag, Best Odor Remover; Effective in Refrigerator, Closet, Luggage, Drawer, etc. Prevent & Eliminate Mold and Bacteria; Chemical Free. (75g)(natural) Esther Natural Air Purifying Bag can keep your refrigerator fresh, dry and odors free. Absorbs moisture to prevent mold, mildew and bacteria from forming. The powerful bamboo charcoal is sealed inside a beautifully stitched linen bag. To rejuvenate, place direct under the sunlight 2 hours once a month.