I will say i have always been a doubting Thomas. And such was the attitude i had when i bought this,but i just got a dog and only a year ago i put down a new ivory colored carpet. I though if it just worked half as good as they claimed it would be better than nothing. I was compleatley shocked when i got through .it worked great and all my staffing were actually gone. AMAZING!!!!. It was so easy to use as well. Just put in the dolutions in a small tank fill the big one with water and hot the switch. The machine does the rest. In short it is a great machine. PS. I hate doing reviews but felt i had to on this one Just tried to submit this review and what a joke it kept refusing to take it. If you buy this,do yourself a favor. DONT DO A REVIEW