TGNS Natural Bamboo Charcoal Deodorizer Bag (Black) TGNS Bag effectively absorb odors, allergens and harmful pollutants; Prevent mold, mildew and bacteria growth by absorbing excess moisture Fragrance free, Non-toxic; Eco, Pet and Children friendly To be used in the home such as Fridge, Freezer, Closet, Shoes cabinet, Kid's room, Pet Area and in the Car as well 100% fresh, natural and quality organic bamboo charcoal crystals in a durable and well-made bag One TGNS bag to cover small area up to 70 square feet. Reusable for 2 years. Just put it under the sun for 1 to 2 hours to "recharge" it monthly.