The Kitty Sill-EZ Mount Scratcher Refill Pad fits the Kitty Sill Cradle-EZ Mount Scratcher. The refill installs in moments. The Kitty Sill Cradle-EZ Mount Scratcher is a perfect way to give your cat a place to scratch that is located away from your furniture and up in their favorite viewing area-the window! The K&H scratcher satisfies your cat's natural scratching instincts, while encouraging appropriate scratching behavior. Scratching is not only a way for your cat to entertain themselves, it also helps groom and maintain their claws. The K&H Kitty Sill Cradle-EZ Mount Scratcher and refills are the perfect way to help satisfies your cat's natural scratching desires and maintain good claw health.