The Moso Natural Air Purifying Bag is the easiest way to keep your refrigerator or freezer fresh and odor free for up to two years. The Moso Bag removes odors of all kind, including leftovers, spoiled produce, the aftereffects of a power outage, or foods with distinctive smells such as fish or cheese. More powerful and longer lasting than baking soda, the Moso Bag consists of non-toxic, chemical free and fragrance free moso bamboo charcoal. Space saving suction cup included. Ideal for cool storage spaces such as refrigerators, freezers, wine coolers, etc.