In order to get anything truly clean, you need to use water to flush out the cleaning agents and dirt. Hot water extraction is the method that uses a flushing process to remove dirt. (Imagine washing your clothes and not rinsing them. That’s what happens to carpet cleaned without the hot water extraction method.) The Deep Steam Clean’s Three-Step Deep Cleaning system uses a three-step cleaning process: a pre-conditioning cleaning spray to loosen soil and a combination hot water fibre rinse and a powerful vacuum to extract and remove both the cleaning solution and the dirt. We then recommend an application of ultra care™ Four guard Carpet and Upholstery Protector (optional) and/or Ultra Care™ Fresh Scent Plus+ Carpet Deodorizer (optional). Reapplying the carpet protector helps restore protective properties to your carpet, making it easier to care for.