The included adhesive Buckle allows the filter to be attached to the lid of any trash or compost can, even without a deodorizer compartment Absorbs and neutralizes smelly trash odors- Keeps your kitchen smelling fresh and clean Widely used in all kinds of garbage cans, compost bins; Just stick under the lid of your trash cans, even no Built-in Filter Compartment. Each product is individually sealed and not be exposed to air to weaken the adsorption capacity Made of Natural Coconut Shell Activated Carbon- environment-friendly and highly efficient