Reading reviews at Amazon can be entertaining.....
"Huge blood stain from a lacerated ear, half a bottle of red wine I spilled and forgot about for a week, various stains from a mentally retarded cat who utilizes every spewable bodily function to jeopardize my security deposit, my gross ex's many chewing tobacco spills, an entire bottle of black India ink, all the various alcoholic offerings my stupid drunk friends tend to leave for me in the night. All vanished completely. It even gets out really old stains that are years old.....It's biodegradable. It probably cures cancer."