Where are horse feces stored?

horse feed should ALWAYS be stored in somthing metal that does not rust so that mice/rodents/bugs cannot eat or bite thru the metal, I use metal garbage cans with a bungee cord looped thru the handle to hold wheat bran and senoir grain in. don't use anything plastic feed should be stored in somthing/ someplace dry, not overly hot or overly cold. away from a horse's curiOSity and reach -hope this helps