I took the shark back yesterday because in the manual it says not to use on waxed floors. My terracotta floors have to stay waxed all the time. I ordered the Haan MS30 steam cleaner. I called the company to ask if it can be used on terracotta waxed floors and they said as long as I'm useing the tile polish and not a paste. Now I'm wondering if that Shark wouldn't have worked too.