The refrigerator deodorizer is equipped with a rechargeable battery that can be used for several weeks on a single charging without the need for a filter cartridge or filter box Not only does it absorb odors, it also actively removes it. In just a few hours, you'll notice how clean your refrigerator smells This portable deodorizer is light and compact in size, suitable for home and travel Refrigerator deodorizer can effectively reduce unpleasant odors in closed environments such as refrigerators, freezers, shoe cabinets, cabinets, cars, pet rooms, It also extends the shelf life of food and keeps it freshly The USB rechargeable refrigerator deodorizer is fully automatic and none maintenance, saving time and money