On Amazon.com where you can now get these
Amazon Basics Dog & Puppy X-Large Heavy Duty Pee Pads 60-Pack for just $14.45 shipped (regularly $30.39)!
These super-absorbent 5-layer pads are durable enough for puppies and dogs- including potty training and helping senior dogs. Plus, they’re suitable for both indoor and outdoor use. They also feature a plastic border on all 4 sides to prevent overflow and a leakproof lining to keep floors safe from leaks.