The Treasborn Natural White Sisal Spare Scratcher Post 2Pack for Cat Tree Replacement Scratcher Rifill Post for Large Cat Tree Refurbishment 15.75″ No Smell for Large Cats is a great way to help your cats develop health and good behavior. This post is made of tightly wound sisal that has a sturdy and natural look. It’s easy to replace and available for most cat trees. The post comes in a pack of two so you’ll have one on hand when needed!