From my perspective, if you do a good job dusting then most of the job is done. We argue a lot about the proper washing techniques, when dusting is the most important part, in my opinion. My early experiences were from 1988 to 1995. We had a pit for urine soaked rugs (wish we had had a water claw), but we never dreamed of washing every rug in a pit. Especially when a good dusting and a good pre-spray and extraction rinse satisfied our customers. Extracted rugs dry in a couple of days even in the humid midwest. Pit washed rugs were a pain to dry without a proper dry room.
Of course most of the rugs we cleaned were under 20 years old. Our competition ran rugs through a Moor machine and declared they were finished once the rugs were dry. We were better at finishing in terms of cleaning fringes, spotting, and had a very good repair facility. It is good to see that many are experiencing the power of extraction with innovations like the Rug Sucker. We only had a wand and a Ninja portable. I would do it differently today, but would still encapsulate some rugs, extract some rugs and pit or tub wash some rugs depending on the condition and value of the rug as well as what the customer wanted to spend for the cleaning. Even then we sold a basic cleaning and a deluxe cleaning which included protector.
