I don't have one of those or the money to get one. Anything that I could use that is house hold to clean them? They have some pretty nasty stains.
I just bought a Bissell Little Green Machine Thurs. at Big Lots for $50, and guess what -- next week it is on sale for $29 (I get there ads emailed early). I'm going back Monday with the receipt to get the difference back. I'm sure many things work -- most involve spraying and scrubbing, which led me to the Bissell. It is still in the box in my living room, and I have spots on my carpet because of a two-year old.
There are so many cleaners out there. I have seen the Tuff Stuff, but never used it. Anything in a spray or a can will probably do. Find one that works for you. Some people use Simple Green. I bought a similar product called Orange Cleaner. I prefer to not use that stuff on upholstery.