OK so this is a fan stain remover! But not for what you'd expect. My childrens polos turn grey so quickly but I soak them in a squirt of this with warm water for a couple of hours and then wash. BOOM stains gone. Forget expensive stain removal for plain whites.
This is not good foil. If it gets a tiny dent in it then it sticks to itself and tears holes in it, you then end up losing a large piece to get it pulling out properly again...