If you are considering a water-based cleaning service over dry cleaning, then you need to know certain things. You need to know the kind of backing the carpet has-permeable or impermeable, how is it affixed to the floor, what type of yarn is used-loop pile or cut pile and, what fiber is the carpet made of-nylon or olefin. Once these questions have been answered appropriately, you can choose the right kind of service. And if the water cleaning service is better for your carpet then so be it, as most carpet cleaners think this method gives better results than dry cleaning.