Actually Marty, olefin berber is one place where I would make a singular exception and consider recommending the encap method for residential carpet. Olefin berber wicks like a pig (no pun intended Marty). And encapsulation cleaning technology can do a terrific job retarding the wicking process of olefin berber. Whether it's used as a shampoo method, as a bonnet/OP method, or as a HWE method - the crystallizing polymer in a good encap detergent can accomplish some pretty impressive stuff when it comes to berbers.
P.S. That's not to say that encapsulation chemistry could never be used on residential carpet. In fact, I use it exclusively on my own home, and our white carpet looks perfect. However I don't recommend encap as a stand alone method to the masses for residential carpet, because I know that folks will invariably push the system way beyond what it's intended for and it may not produce the results they hoped to achieve. So I prefer to recommend it for what I know it's best suited for, COMMERCIAL. That has always been what I've recommended.
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