We bought a shampooer a while back and have liked it. Had one of the most honest carpet cleaning company owners I can imagine come over after a puppy we had peed everywhere in about a week period. We worked on it and couldn’t get the spots to keep coming back.
He told us that he’s pretty much made his career on homeowners buying carpet shampooers because they always use too much soap and that causes everything to keep coming back up. He said the companies that sell the shampooers and the soap recommend too much soap, as well, so you run out of it faster, therefore buying more.
I say he was honest because he told me he’d fix it for me that day, or he recommended I try running the shampooer a few times over the next week without any soap, hot water only, just to get the rest of the soap back out of the carpet. I couldn’t believe how well it worked.
He didn’t charge me a nickel for coming out, gave me that bit of knowledge even though it meant him not getting paid, and called me two weeks later to follow up.
Once we learned that, our shampooer has been a lot better to use. We mix half of the detergent it calls for and only use the detergent on every other use. We don’t have a puppy problem anymore, but with the salt/mud/dirt up here, the carpets can get a little unsightly every few months. A quick touch up is all they need, now.