We have used Zerorez for over 3 years now, and the produce and the people are amazing! The fact that it is green and chemical free is very attractive. Our provider took me out to the truck beforehand, to show that the water was clean and clear, then cleaned the carpeting. Afterwards, we went back to the truck, and it was absolutely black. The carpets always look like new when they are finished. They always appear promptly, and everyone is ALWAYS cheerful and friendly! What could be better?