Potty training your new dog or puppy just got unbelievably easy. Unlike other training pads, the Wee-Wee Patch Indoor Potty looks and feels like real grass. So when it comes time to go outside, your dog won't know the difference. The grass is lined with a built in attractant, telling your dog 'this is the place'. Can be used inside or outside. Durable tray has a unique drain spout on the corner for liquid waste. Grass is removable and replaceable, so cleaning is a breeze.