I am sure you have seen renditions of this all over Pinterest and such, but it works! So, here is another post about it. I like to call it my "Weapon for Mass Destructions". I have used this formula to get out grass stains, arm pit stains,mud, red punch and most recently fingernail polish. This formula is great for clothing, carpet and most fabrics.
-Dish Soap (if the stain is oil based)
In a small bowl pour approx. 1/4 cup of Hydrogen Peroxide (more if you have a serious situation on your hands), add enough baking soda to make a thick paste. If the stain is oil based (like grease, lipstick, etc.) add a couple of drops of dish soap to mixture.
Paint the mixture on the stain and let it sit for about 15 minutes. Rinse with water or launder as you would regularly. Repeat if necessary. (You may want to test a small area before going all out, just to make sure you don't do more damage to your crime scene).