The Bambo Factory's Activated Natural Bamboo Charcoal Deodorizing Air Purifiers are a uniquely chemical-free product for your car, office space, kitchen, pet area, pantry, closet, storage boxes, utility rooms, and more. The Bamboo Charcoal purifiers are naturally porous to absorb odours and harmful substances like moisture and mold spores. As the deodorizer works it keeps the air naturally clean and smelling fresh.  The Activated Natural Bamboo Charcoal Deodorizing Air Purifiers provide greater convenience compared to electrical models. They can last as long as two years and only need a few hours in direct sunlight to charge. No continuous electrical consumption and maintenance.