The main difference? We don’t leave that black nastiness down deep in your carpet or your seat where the comparatively weak suction of the small machines can’t reach! Another difference is we use professional cleaning solutions that are actually intended for carpet & upholstery, not the cheap All Purpose Cleaners (APC’s) from the Dollar Store cleaning aisles. Plus we use a professional fabric rinse that neutralizes the cleaner and leaves the carpet & upholstery soft & supple instead of that APC “crispy” feeling. This also helps to prevent stain “bleeding” back from still active cleaners deep inside the carpet or upholstery. Hire a professional! You will be much happier down the road!