Naf muck off stain remover stubborn stable stains mean nothing to this powerful formula a little spray on the stain will lift it clean away and your horse or pony will be spotless so even for those stains that seem impossible its definitely worth a try we havent found anything it cant remove so please go ahead and try it the results will be amazing directions for use spray muck off stain remover directly onto stained area avoiding eyes and massage in well with a cloth leave