How To Stop A Dog From Peeing On Carpet Accidents happen, especially when you're potty training a dog. Puppies and senior pets are known for having the occasional accident, but it can happen to any dog. That's why it's important for all owners to know how to stop a dog from peeing on carpet. It is incredibly difficult to get the smell of urine out of carpeting. The urine seeps into the fibers of the carpet and the padding underneath. Even the best rug cleaning machines can leave some odor behind