Especially if you or the former owner may have used shampoo previously, cleaned with spot cleaners, spray on cleaners or carpet deodorizers, all of these products can cause a foaming problem. If none of the above has been used on the carpet then you may not need it. Watch the clear dome for foam build up. If you see a build up, stop and get some Anti-Foam. We encourage the use of Anti-Foam to insure maximum suction.
Different stains have different solutions.
For stains like blood, chocolate, grease, milk, oil and many stains of unknown origin, try using Rug Doctor Spot Remover following the directions on the bottle. For stains from coffee, tea, wine, berries, fruit juices, and other acid-type stains, try using the Rug Doctor Pet Stain Remover. Home Page . Check out how to remove them fast and easily.