We have 1000 square feet of pre-finished hardwood floors and Bona Hardwood Floor Cleaner has worked well for general cleaning. Seeing that there was a Bona Hardwood Polish we thought it would be a good idea to use it. BIG MISTAKE as the flooring took up the polish irregularly and looked worse after applying. Ultimately hired a professional company to remove the polish with Bona Polish Remover. Took two workers several hours to remove the polish. Suggest you check with a local flooring company on what they recommend for your specific hardwood floor.