This was my first time using them. Heard great things but overall not impressed. We did not see a difference in the cleanliness of the carpet or the tile grout. Our tile is only 3 years old and we can still see visible mud in the grout. I think they spray some solution and wipe it with a mop. As for the carpet I am shocked that I can so easily see milk stains. I would have thought a thorough cleaning would easily lift these type of stains. They are coming back to clean again, but I am very irritated at the inconvenience. When I called to complain they simply offered me another appointment. Did not seem to care that this was burden to have them come out again.