simplehuman Odorsorb Filter Kit, Natural Charcoal Our charcoal odorsorb filters neutralize odors naturally Versatile placement fits perfectly under trash can lids, as well as in cabinets, refrigerators, and pantries Includes holding case includes refillable holding case to conceal and protect filter Recharges in sunlight simply expose your filter to sunlight for 3 hours every 4 to 6 weeks to recharge Easy to attach easy to attach with double-sided tape included Fits perfectly under trash can lids or in cabinets, refrigerators and pantries Holding case easily attaches with double-sided tape Includes 1 charcoal filter Date wheel reminds you when to replace your filter