A long overdue purchase for something to spot clean for a vomiting cat, on carpeted surfaces that includes stairs. I have used it only once so far and it worked very well, even on some stains that may have been over a week soaked in and dried. I followed all cleaning directions and the only thing I noticed was that some hair collected inside the dirty water collection tank, and I am not sure if there is a way I can pull all of that apart in order to clean the hair out of it. Likewise there is some matter collected in the nozzle which won't entirely rinse out.