I tried a couple gallons and wasn't impressed. Also it is not as cheap as it looks when you consider how much you need to use. If you want a cheap liquid prochem makes a decent one for under $15 that dilutes about 3 times stronger XL333. I'm alot more comfortable running a Prochem product through my machine.
The proforce is really made for use in Bissels, Hoovers, and Rug Doctors. I would agree, it is junk, so the more customers that use it with poor results, the more business we get cleaning up the mess when the carpet resoils quickly.