My daughter has a rental house that she is trying to get in shape to put on the market to sell. The last tenant destroyed it. The whole house has pop corn ceiling and some of it is very dirty. Can it be painted or cleaned? She is doing the work herself so she needs a easy and quick way to do it. She scraped it off one of the bathroom ceiling, but she is not wanting to do all the rooms, too much work. Thanks for your response.