While your hay may be delivered in perfect condition, how you take care of your hay loft may determine the condition it's in when it reaches your horses’ mouths. Hay lofts need to be clean. Old hay, insects, heat and moisture will be very detrimental to the new hay stored in the loft. It’s a great time of year to inspect your loft. Does it smell like somebody’s musty attic? Horses like, and therefore eat, clean, fresh-smelling hay. Hay soaks up odors like a sponge, and a smelly bale of hay is not going to appeal to any horse.