The term USE STEEL WOOL ON can be broken down into two crossword solutions: SCOUR (5 letters) and SCRAPE (6 letters). Steel wool is a type of abrasive material made from steel that is often used for cleaning and polishing surfaces. Scouring is the process of using an abrasive material to clean a surface, while scraping is the process of using an abrasive material to remove material from a surface. Therefore, the term USE STEEL WOOL ON suggests using steel wool to both clean and remove material from a surface.