Pet Potty Patch™ is the modern way to house break your dog. Now your pet can go anytime without having to leave the home or apartment. Make life easier with this,comfortable three-tier alternative to frequent outdoor trips. Top layer of artificial grass lets liquid flow through, second tier grate keeps grass dry, bottom collection tray holds up to a gallon of liquid for multiple uses. Clean up is easy with just a simple rinse with soapy water. Find out why this is the next step in puppy training. 17 x 27. 36 refill pads.