We are doing some renovations to a home we just purchased. The carpet had hardwood flooring under two layers of carpet. The bottom layer of carpet was glued down by a dark amber colored adhesive. Does anyone know how I can remove the adhesive from a hardwood floor? I have tried mineral spirits to no avail. I also tried some hot soapy water. It worked to some extent but it there was still a lot of scraping needed to get it up.