(07-11-2017, 05:22 AM)BrandonCrayden81 Wrote: If the stain really keeps coming back even after all that cleaning and time, then probably the problem is below the carpet itself. The coffee has soaked through the fabric and is embedded in the floor beneath it. Each time the weather gets hot, the dried stain dissolves and starts to smell. Wicking is very unpleasant and fixing that issue is not as easy as most people think. Simply extending the cleaning procedure won't do it this time. Treat the spot as you normally would, and after that stack towels and weights on the spot overnight.
If the stain reappears again, then the next step should be a professional carpet cleaning by hot water extraction, conducted using a truck-mounted unit, because they are much more powerful.
Braydon.... if you are referring to Rick J's post.. I'm not to sure a "professional" hot water extraction will be anymore effective on direct glue down commercial carpet, nor how weather has an impact in a climate controlled environment. But I could be wrong.
The spot or stain sounds like it may have been treated before by someone else.... no telling what was tried, could be the customer bought some off the shelf product and tried to remove (not sure). In allot of cases it can permanently set and cannot be removed.