Best Pet Supplies Corrugated Cardboard Cat Scratcher Refill Pads, Lounger, and Fun Interactive Scratching Boards, Claw Safe, Durable, Natural Recycled Materials, Supports Active Play - WhalePremium Cat Scratcher Cardboard Available in classic vertical or round pad refills as well as a cat lounger, whale shape, and ramp droplet, and cat design these cat cardboard scratchers give them a place to stretch their claws away from furniture. Heavy Duty, Claw Safe Materials These corrugated cat scratchers are made with a high quality wood paper thats strong enough to stand up to sharp claws and little teeth, so it provides long lasting support