"I purchased the ProHeat Pro-Tech. I cleaned my 14 yr old carpet and I could not believe it----my carpet looked like new, it's original color came back to life! I love the ease, convenience and easy clean up. It was the best investment I have made in a long time. With my two year old grandson and 120 lb. Wolf-shepherd running in and out--I needed something that works , and I couldn't believe what I was seeing while cleaning. Thank you so much for producing such a product that really does what the outside of the box/packaging says it does."