Does not do anything it claims to do. When you call to complain they quickly offer to refund you half of the purchase price minus the postage so you don't have to pay postage to return the product and go to the PO.. not worth the trouble for sure but you are still out about $17 and they made $10 for a small bag of what is probably similar to oxiclean.. just a scam User's recommendation: just don't buy.