Camco’s Odor Absorbing Bags help make any small space smell fresh without the use of fragrances. It is made of 100% Moso bamboo charcoal, a renewable resource, and is reusable for up to two years. Once a month, place the odor absorbing bags in direct sunlight for at least an hour to rejuvenate the bamboo charcoal. Size: 500 grams. Odor Eliminating: Conveniently maintain a fresh, dry and odor-free environment Odor Eliminating: Conveniently maintain a fresh, dry and odor-free environment All-Natural: 100% bamboo charcoal is non-toxic, non-fragrant and chemical-free Reusable: Reusable for up to two years— to rejuvenate and re-activate, place the bags outside in the sun once a month for about an hour Size: 500 grams