I've just received a very rare soccer jersey that I bought off eBay. It has a few stains about size of a quarter on a few spots.
I've tried spraying "Shout" stain remover product on it and let it sit for
20 minutes before washing it but they're still there.The shirt should be made of 100% polyester. I am not sure what kind of stains they are. Anyone can give me some tips?