The answer:
If it is a building where I am responsible for the continual appearance of the carpet, I prefer to mix up an encapsulation cleaner. It doesn''t remove tar and coffee as well as a strong carpet spotter, but it leaves zero harmful residue. In fact, that treated spot will resist re-soiling. Most of the encapsulation...
Gary Clipperton
National Pro Clean Corp.
(719) 598-5112