You buy this product on Amazon. I was looking for something other than the normal resolve or oxi clean to remove stains from my kids clothes. It's expensive and the bottle is tiny- BUT it actually removes stains! You use a small amount and let it sit for a minute or two, then I use an old toothbrush to scrub it in and throw it in the wash. Voila- stain gone. ** does not work on Sharpie marker, but lightened it.