You do not do a rinse! There is too much cleaner/solvent left behind which makes the carpet stiff and collects and holds dirt faster. All walkways were showing foot traffic two weeks after you cleaned. I had a carpet cleaning business so I damn well know what I'm talking about. I would always do a rinse with my extractor. Never had a problem like this. I will definitely go back to hot water extraction with bio cleaners. You are using some bad solvents and my stiff carpets are the proof. Sorry.