We were preparing to sell our house with hardwood 1 1/2 years ago and had a guy come in to give us a quote for re-sealing. He said that since I'd been using Orange-glo that the floors couldn't be re-sealed, they'd have to be stripped and re-finished. Lesson learned never to use orange-glo on hardwood no matter what the ads say. We only use a damp mop with vinegar and now we have laminate but that's still all I'll use.