There are many reasons to embrace the hydroponically grown, dirt-free grass in Fresh Patch. Our REAL grass training pads are all-natural, making them completely safe to use within the home. Dogs instinctively want to go on real grass, so training is easy. The living grass absorbs liquids and controls odors naturally, turning puppy potty training into an easy and stress-free experience. There is no cleaning or maintenance needed because the entire unit is fully disposable. Simply replace your discarded unit with a new Fresh Patch when it arrives at your doorstep.What Size is Your Pet?