Spray WOCA Tannin Spot Neutralizer evenly on the stain directly from the bottle. Leave to dissolve for approx. 30-60 minutes.
Wipe with a damp cloth that has been wrung in lukewarm water.
The surface must be completely dry.
Apply the original surface finish, e.g. wood oil, wood soap or wax, to protect of the surface.
Wipe off all excess oil using a lint-free cotton cloth.