Q. I occasionally need to repaint kitchen walls that have a thin buildup of grease on them. Are there any products available that will cut through this film so I can apply latex or polyurethane?

A.Henri de Marne responds: For heavy buildups, use Speedy White Hearth and Stove Biodegradable Cleaner. If you can’t find it locally, call Speedy White at 800/872-8855 or write them at 871 Fairport Rd., East Rochester, NY 14445. This product will do a better job than 409 or Mr. Clean, which might be sufficient for light contamination.