How to Save a Pet Stain Hardwood Floor

Clean the floor

• Prior to sanding, thoroughly clean the floor to remove any polish, wax and contaminants. This will probably involve mopping it several times. It’s fine to use soap at first, but apply clean water only on the last couple of passes. The pet stains will become more apparent once the floor is wet.
• If the pet stains are fresh and creating odors, apply white vinegar to the affected areas and let it soak for a few hours. Then apply baking soda, which will absorb moisture left in the boards and help with the smell.