This product is amazing. It took out an old pee stain on a white linen couch that has been in my family for over 30 years. In order to keep this couch I really thought I would have to have in reupholstered. The yellow stain came out beautifully and absolutely no smell of urine what so ever!! I followed the directions to a "T". It did take several applications, but all importantly the product works! I highly recommend it!