So when i recently gave the inside of the CLS a clean and removed the passenger side floor mat i found a secret lurking deep down. A large, what i presume to be Coffee Stain. I have no idea how long this has been here and attempted to remove this at the weekend. Fortunately i own a VAX 6131T which can soak and extract water from the carpet. I have treated the stain with white vinegar solution and some vanish oxy action stain spray, which seemed to do less than the vinegar and while it has reduced stain it is clearly still there. The water that has been removed from the area was black but i am hoping that someone can advise on what i can do to lift the rest of the stain?