The term “tannin” covers a broad range of stains originating from fruit juices, mixed drinks, wines and sodas. It’s one of the most common stains confronting the spotter; it’s also the most difficult one to remove. Complete removal often isn’t possible.
Several readers have called to inquire about specific recommended procedures for removing certain tannin stains. Most inquiries concern the difficulty of removing various wines, including champagne. Graduations and weddings usually contribute to a surge in these stains.