I have several items of children's clothing which i want to sell on ebay but they have stains on them of one kind or another. One top in particular has paint on it. i thought it was ordinary poster paint but could be DPs acrylic. Have tried Vanish spray and washing with a Glowhite sachet to no avail. Some items have been soaked in Biotex and that didn't work either. Any suggestion? Are stain devils any good?