I am so thankful that I bought the Big Green Machine! I figured it would do a good job of cleaning after reading the reviews but I never thought it would be this great! My carpet had stains that my Hoover Dual V cleaner wouldn't remove even after several times of cleaning the carpet. The Big Green Machine got those stains out the first time!! I used the Big Green Complete cleaning formula in it and I'm amazed at the results. I never write reviews but I feel obliged to thank you for this wonderful cleaner and to let other people know that this cleaner is so worth the money! My carpet is over 15 years old and we've had 3 dogs and a cat in that time so there were plenty of stains but now they're completely gone! Thank you Bissell for making this machine!!