The owner is a nice fellow, however he works so fast (because time is money) that I found he missed large areas that were completely untouched and the carpet felt somewhat "crunchy" after it dried, which it should not if the soap has been correctly removed. He was working on a hallway which was fairly dark, and I said "Oh, here, let me turn on the lights so you can see the carpet." and he said that he didn't need the light to see what he was doing. What?? He simply works too fast to do the job well. I don't recommend him.