Xcellent Global 3 Pack Air Purifying Bag Bamboo Charcoal Air Freshener - 30g & 85g & 100g with 4 Hook Clips for Home, Kitchen, Office and Car HG113 The easiest way to maintain a fresh, dry and odor free environment. Prevents mold, mildew and bacteria from forming by absorbing excess moisture. Fragrance Free, Chemical Free and Non-Toxic.The natural bamboo charcoal absorbs odors, allergens and harmful pollutants. Reuse for up to two years, just place the bags outside in the sun once or twice a month for about an hour to rejuvenate. The bamboo charcoal are sealed inside beautifully stitched linen bags. And four hook clips are provided for convenient using.