Use 2/3 cups of dish soap, 2/3 cups of ammonia, 6 tablespoons of baking soda, and 2 cups of warm water. Mix everything into a spray bottle and shake well. It works really well, it even got a chocolate stain off my child's shirt. Spray the stain and let it sit awhile then launder as normal. Always shake well before using.
Homemade Stain Remover