Urine can permanently harm the polyurethane coating on your hardwood floors, resulting in costly repairs for homeowners and the loss of pet deposits for renters. It would help if you took precautions to keep pet urine from causing damage to your wood flooring and area rugs. Some canine accidents may end up leaking down onto your hardwood floors. To fix that up, you should consider installing a waterproof rug pad below your area rugs.