[CH-CUT Technology]: This deodorizer is applied with CH-CUT technology to breakdown odor particles in the air, which is different from traditional charcoal or soda bags to absorb the odor particles and release the it when they are saturated [Food Grade Stainless Steel]: The 304 Stainless Steel housing allows you place the deodorizer in refrigrator to breakdown the odor particles from leftover, bad vegetable and fruits without contaminating your food [Wide Applications]: This odor eliminator can be used to odor in refrigrator, shoe cabin, wardobe, closet, cars, pet kennels Thanks to CH-CUT technology, this deodorizer is designed to capture the odor air in the chamber and then release it after the odor particles are decomposed, so that the deodorizer never get saturate and release the odor particles without treatment [Compact and Slick Design]: This odor eliminator measures 71mm x 71mm with smooth finish, and it not sacrifice the limited space in refrigrator, cars, etc. When you are going to use the deodorizer in a space more than 18ft³/0.5m³, please place more pieces of this deodorizor to achieve maximum performance