Take from someone who has a professional cleaning of carpets and upholstery in Rochester, New York, for many years. I use the method of extraction of dry foam. This system for extracting soil moisture is very efficient and economical to clean carpets or upholstered furniture. "You have a better system" or "My carpet like new" is what I am used to hearing hundreds of satisfied owners over the years. The company produces foam Von Schrader Dry cleaning equipment I use.