I saw it all over pinterest, and researched it on different blogs (One Good Thing). I used it to take out the underarm stains on several camisoles and was successful. But this was an old, grease stain on a favorite sweatshirt. Mixed up a batch. I don't even bother measuring anymore, a squirt of dawn, hydrogen peroxide, and a dash of baking soda. I used a nail brush to rub it in, and viola good as new!
My next challenge was an old tomato based stain on one of my daughter's white shirts.
I wasn't as successful here, it is lighter but not gone. I didn't let it soak at all, just put the stain fighter on before I washed it. I will try again, and let it soak for several hours or overnight and see how it does.