Deviln’s right. Try coffee remover. If the stain is untoched with any of those nasty over the counter cleaners, and hasn’t been there too long then 101 will work. May ever give blood remover a shot. Sounds crazy but has worked for me.
If coffe remover doesn’t work try orane deodorizer straight, or full strength. You have to be careful to and don’t let it dwell more than 10 seconds. It will disolve the glue on the back like T.G.P. will. Rinse and extract with water or 101.