This product is AMAZING! My dog throws up some nasty, dark stuff once in a while. I wipe up the excess, spray My Pet Peed and the stain and smell is gone within a short amount of time. It removes pee stains, poo stains, vomit stains. It even works on human stains. I can't say enough good about MyPetPeed! I just wish it were sold in pet stores near me!