Most steam cleaners use a three-part system. First the machine sprays a cleaning solution onto the carpet. Then an agitating brush works the cleaner into the carpet fibers. Finally, a vacuum system sucks up the dirty solution and stores it in a reservoir for disposal. If you'd like to have a cleaner on hand for emergencies, you can purchase small units (figure A) for about $50. Larger household models usually cost $100 to $300.
| 
)
)
