These Activated Shoes Inserts of bamboo charcoal are great for keeping your shoes odor free. Slip Bamboo Charcoal Shoes Inserts into each of your shoes as soon as you take them off, and they'll not only help absorb any foot odors, but they'll make your shoes last longer by rapidly absorbing excess moisture. Bamboo Charcoal Shoes Inserts can help anywhere around the house you have unpleasant odors.