Sticker Stain on planned timbers

Does anyone know how to get rid of sticker stain on Oak timbers. Without planning the stain out.

Is sanding an option?

It is too deep into the wood to sand out.

Try oxalic acid, also sold as a deck cleaner. Household bleach might work too. Start someplace inconspicuous first & rinse well to neutralize the bleach.

I would try some of the deck washing solutions, they are designed to bleach the deck before you put on stain.

Bob