Green Tea Stain Removal From All Wool Rug: Suggestions ?

[Bob]

Hi,

All wool rug.

Spilled Green-Tea on it.

Tried Lemon juice, but only made the stain worse.

Then tried one of those cleaning products with Hydrogen Peroxide as a component; no improvement.

Any suggestions would be most appreciated.

Thanks, Bob

[Frank]

Never had problem but curious as I did some dye R&D.

I see stuff on the internet:

Wool likes acid dyes and I don't see chemicals in tea that would chemically bind.