Knock Out is a powerful stain remover that has a unique biodegradable formula. It can break through the bond on dirt, grime, feces, dust, and stains that is on the hair, wool and skin of all livestock. Simply spray Sullivan’s Knock Out directly onto the stained area, brush it through, and blow out. – Restore discolored spots to their natural color – Safe, clean, easy to use, clear color and no purple mess – All natural brightening action, no bleach, dye or stripping agent