2 Bamboo Carbon Air Fresheners in decorative cylindrical boxes * Each contains 145 grams of bamboo charcoal granules in a non-woven fabric bag. * Bamboo Charcoal helps improve indoor air quality by absorbing and trapping odors, allergens, and harmful VOCs. * Re-usable for years, just place in bright sunlight for a couple hours twice a month to renew odor absorbing capability of the charcoal. * The activated carbon in these air fresheners is derived from environmentally friendly bamboo.