My go to stain remover is a bar of Ivory soap(not dish detergent). Wet the stain and rub in the soap. Scrub soap into the fabric then leave it until you wash the item. As this is an old stain you might want to leave it in for a number of hours or overnight. It will not hurt if it dries. I find this takes out the majority of stains. Sometimes it may only dull the stain, in which case just repeat.
Do you know what the stain is? If it is blood be sure to use cold water but I have even removed old blood stains with the Ivory treatment.
Last edited by selm; 08-27-2013 at 09:26 AM.