Features 【Safe Material】These activated carbon filters (fibrous) are made of high-quality powdered activated carbon as the adsorption material, and the polymer binding material is used to attach the carbon to the fiber. The thickness is 8-10mm. Thick and dense carbon filters can effectively absorb and capture food odor in the compost bin, they are environmental friendly, tear-resistant and safe to use. 【Functions】Effective at blocking unwanted odors. Absorbing odors from liquids and gases, universal carbon sponge filter foam sheet ideal for capturing carbon-based impurities or organic chemicals, helping to improve indoor air quality by regulating composting emissions to ensure a clean house. 【Pack of 10】One pack includes 10 activated carbon sponge. One sponge can last approx 2 months 3 months. It will also depend on what is being put in the food waste caddy, the weather and many other factors, so it's possible that it lasts only few weeks. But anyway you can just it when you find it is time to do so. Be warned, don't leave them in the bin too long when old or they will grow and accumulate rot. 【About the Shape and Size】These square replacement filters pad are 5.1inches x 5.1inches, fits square compost bin lids better. You don't have to trim round filters to waste.If you have double-sided tape, you can stick it to the back of any compost bin lid even there's no customized fitment for filters(The double-sided tape is not included in the package). 【After Safe】100% Back - if for any reason you are not entirely satisfied, you may any item in its original condition for a full or an exchange within 7 business days from delivery. Features: These activated carbon filter are used on smoke absorbers when absorbing soldering smoke. Activated carbon filters can remove most harmful soldering fumes and help create a healthy working condition. There are total 10 pieces of activated carbon filter in one set that you may use for quite a while. These are indispensable for safe and comfortable working environment to ensure health of soldering workers. Convenient and easy to use, simply put it on a smoke absorber and enjoy your soldering work. Specifications:Material:Activated carbon spongeColor: BlackSize: 13*13cm/5.1*5.1inQuantity: 10pcsWeight: 152g(approx.) Package Includes:10 x Activated Carbon Filters (other items are NOT included) Package List