Bamboo Charcoal Refrigerator Freshener 4 pack 4 Bamboo Carbon Refrigerator Fresheners (2 green, 2 brown) Absorbs odors, much more effective than baking soda Extends the life of fresh produce by absorbing the ethylene gas naturally produced by fruits and vegetables as they ripen Activated Charcoal derived from environmentally friendly bamboo Each attractive bamboo box contains two bags of activated charcoal, 180 grams total