Cats communicate through touch, when a cat scratches an object, scent glands in the paws deposit the cat's odor as a way to mark his territory The Catit Design Senses Scratch Pad appeals to your cat's sense of touch, providing the scratching surface it instinctively needs It features unique, extra-thick and durable design scratch pad with hunt-and-play cutouts allow you to add catnip (included) or treats for extra fun and multi-sensory appeal This scratch pad has accu-pressure mat that provides pressure point paw massage to your cats making it healthy and active Catit Design Senses products can be used individually or combined together to create a complete Sensory Activity Center for your pet This Catit Design Senses Scratch Pad includes replaceable, extra-thick, multi-layered scratch pad with base and mat, white base catnip, grey mat, the refill scratch pads are sold separately