Truthfully I had never deep cleaned my carpets at all, just ran the vacuum once a week. I didn’t have any stains so I never worried about it. However one use of the carpet cleaner and you could tell the carpet was a good shade lighter than before. While the results were great there is just a couple of downsides. The machine is pretty heavy and not the easiest for me personally to run back and forth on the carpet, felt like a workout. There is also a lot of little parts to take out and clean with little crevices that are hard to clean out. It also took a bit to figure out, as again there is quite a bit of parts to this. However I do know this is a heavy duty machine so the weight of it and all the parts is something that is inevitable but it’s something to keep in mind since not everyone is up for the maintenance. Overall for its purpose, it did a great job.