We live in a third floor apartment, so potty training our puppy has been a little daunting. I learned about these terf mats from a YouTube video and am so pleased with the results. Because the pads are made from a material that more closely resembles grass than a traditional puppy pad, we haven't had accidents on rugs. Plus, because you wash these rather than dispose of them, they're better for the environment than puppy pads (always love that!).