500g Bamboo Air Freshening Cube, black - Pack of 2 2x value pack - Passive Activated Carbon Air Filter/Air Fresheners Black non-woven fabric cubes Each cube shaped bag contains 500 grams of bamboo charcoal granules - bamboo granules come from a species of bamboo called Moso bamboo (Absorption strength is based on charcoal weight) Bamboo Charcoal helps improve indoor air quality by absorbing and trapping odors, bacteria, 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 high temperature cured bamboo. Want another style or weight? Search "BambooMN Charcoal" for more options!