Once the rug has gone threw the first two steps in our proprietary hand washing of your rug, we do the final process, a soft water rinse. After all the care we have given in handling your rug, we then make sure all the dirty water along any contaminates that may be lingering are completely removed but using our custom Soft Water Rinse process. This is a soft water "Jacuzzi-like" rinse system, which combines soft water with a soft jet of air that combine to filter out the last of the dirty water. This is done with a constant flow of soft water, along with a large volume of filtered, compresses air which is injected into the soft water stream. What results is a carpet so clean, you could drink the final rinse water that flows off your carpet. Yes! You rug will be that clean!