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. Absorbs and neutralizes smelly trash odors- Keeps your kitchen smelling fresh and clean The included adhesive Buckle allows the filter to be attached to the lid of any trash or compost can, even without a deodorizer compartment Made of Natural Coconut Shell Activated Carbon- environment-friendly and highly efficient; Big enough-5x3 inches, enough for big trash can above 8 gallons 12 Pack - Each filter provides up to 2 months of odor-absorbing power. Only the filters Color: Black Material: Activated carbon filter cotton Package Contents: 12 x Replacement of Filter Wool for Trash Can Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.