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, it's definitely worth a try. We haven't found anything it can't 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 for five minutes before easily lifting stain away with a damp sponge or a damp cloth to leave a spotless finish.