The Moso Natural Air Purifying Bags are high-quality odor eliminators available in a variety of sizes for small, medium, and large spaces that work continuously to effectively absorb and eliminate odors, allergens, toxins, chemicals, and other harmful pollutants from the air without giving off a scent, and they can also absorb excess moisture from damp and musty environments, for which they utilize 100% Moso bamboo charcoal, a powerful odor-absorbing ingredient that comes sealed inside these beautifully stitched linen bags, making them unscented, chemical-free, and non-toxic, and each bag is reusable for up to two full years, after which the bamboo charcoal inside them can be recycled back into the soil to promote plant growth.