SmartyKat Scratch Up Catnip Infused Corrugate Hanging Cat Scratcher can be hung from a doorknob to draw your cat up and away from home furnishings. Or if your cat requires a different scratch angle, it can lay flat on the ground. Great for finicky cats and for discovering your cat's scratch angle preference. Discovering your cat's scratching preferences can feel like guesswork. We recommend trying corrugate first, because the texture more closely mimics tree bark, one of the most common surfaces felines love digging their claws into in nature. The instinct to scratch is hard-wired into cats. Cats scratch to mark territory and promote healthy nail growth, tone muscles and even helps alleviate stress. Scratch Up uses our patented process to infuse highly concentrated catnip between each layer of cardboard, so the potent catnip scent is released every time your cat scratches. Catnip naturally stimulates most cats, providing a burst of playful energy, usually followed by a mellow period.