In the 5 years we’ve been in our house we haven’t done anything to the carpets but vacuum. Using this deep carpet cleaner we were amazed and appalled at how much dirt it picked up!! The cleaner was easy to setup and the instructions were straightforward. All the controls were intuitive and labeled nicely so it was easy to start using. We first did a deep clean with water and the concentrated solution and followed with a warm water clean on “quick dry mode”. Wow it’s amazing the difference!