J.,
Two words... Fels Naptha :)
I have recommended it to many people on mamasource. My Mom, MIL, SIL, and a couple friends have switched to it too. I absolutely love it! It is a bar soap that you rub onto the stain. Just wet the area a bit and rub the bar right on it. I have even "shaved" a little of the bar into the washer when I'm not sure if something will get out (such as a crayon mess I once had!).
It may be a little difficult to find, as I've had some moms ask me where to get it. Look in your local grocery store by the other stain removal products for clothes... it's usually on the bottom shelf (or just ask the grocer). It is WAY CHEAPER and works better than some of the other products too. In my town, I only pay $1.00 for it... and it lasts a looong time :)
I can't say that it hasn't worked on anything for me yet. Good luck with your stain. If you have any questions, let me know. I have got many of my family and friends "hooked" on it.
~SR