Indoor Pet Potty Dog Park Patch Mat Trainning Pad Toilet 25.5" X 20" X 2" Ideal for housebreaking your pet. Portable, easy to clean, just rinse with soapy water. Great for indoors, porches, patios, and balconies. Non-toxic mat consists of 3 layers to keep your home clean and odor-free. Indoor pet potty made of a synthetic surface that's similar to grass.