Scratching post with resting surface and raised edge Cats need a scratching post to groom their nails and mark their territory. Natural and highly resistant, sisal fiber enables cats to remove the scaly top layer of their nails. This helps prevent ingrown toenails. The scratching post is therefore an essential accessory for all cats! The Trend Plum scratching post includes everything that’s important in your cat’s life. Not only can he scratch his nails, but he can also sleep in peace and quiet on the soft plush basket.