If the item is washable, try rubbing the stain with a fels naptha bar (found in the hand soap aisle) and launder. I have had good luck with that. Also try the peroxide with it. Can't hurt as the stain has pretty much ruined the item anyway.
Hopefully the stain hasn't been set with heat - try to soak it in cold water as you would for any blood stains. Then try to remove the stain with bleach or hydrogen peroxide (a light bleach which works well with heat - so iron over it with a pressing cloth) or then try stain removers such as Shout and Zout to remove the stain. If the cloth is not white, it will be more difficult to remove the stain without also bleaching the fabric a bit -
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