I sprayed liberally over the stained areas and let it sit for about 5-10 minutes. I took my scrub brush and scrubbed in little circles over the stains. To my amazement the stains started to lift and disappear. I ran out of time to finish, but the next morning when I came back most of the stains were completely gone except a few of the worst ones. There were water marks where I sprayed my cleaning solution the day before so this time I used my Hoover SteamVac and only filled it with warm water. I resprayed the stained areas that did not come out and then scrubbed again. I used the hand held spinning attachment and water sprayer, and as I went over each section it sucked up the water. It was amazing how well Dawn, vinegar, and club soda worked together.