The durable tray features a unique pour spout that makes for easy drainage. Dogs prefer to go in an area based on its texture and scent. This realistic dual-height grass with puppy attractant provides a natural feel for your dog. The patch is an ideal training aid for both inside and out. Replacement mats are available. For dogs up to 44 lbs. Realistic grass patch gives your pup a more natural feel Dog grass pads have attractant to draw dogs to the pad