Dr. Bales Early Detection Health Monitoring Pee Pads were developed to help you catch a potential health concern before it becomes a serious medical issue. It’s a simple way to be proactive in the health and wellness of your pet at home. High-quality pee pads with the added benefit of color-changing paw prints to indicate the pH level of your dog’s urine. The color change will last up to 24 hours. 22″ x 22″ 100 pack