I got this recipe from Pinterest. This is great for any stain you might have. It's the only thing I use. And it's easy. Easy is my middle name. In more ways than one lol.
In a Spray Bottle mix:
1 part of Dawn Dishwashing Detergent (the old blue kind)
2 parts of Hydrogen Peroxide
Shake. Spray. Throw in the wash.
That's it. It's stinky. But don't let that stop you. It works and it's easy. When you put it through the wash you can't smell it anymore. I promise.