Kong Natural Cat Scratchers are not only good for the environment, they are good for your furniture too. Every cat has the urge to scratch, but if not given appropriate tools, they will make their own scratching posts - on your furniture. These Kong Cat Scratchers are made from natural resources and are recyclable. The Single Scratcher, the Double Scratcher and the Incline Scratchers are reversible to extend the length of their life not to mention are refillable. The Corner Scratcher is neither reversible nor refillable. Take back your furniture and give your cat their own scratching posts.