I have been reading in the vet section here how some people offer their goats free choice baking soda. Should I do that for my little sheep? I do offer them loose sheep minerals, but I move their pen every day and the new pasture is pretty lush. They have both had their first overeating vaccine, but should they have baking soda or tums or something like that to help prevent bloat? Also, how do you all keep your minerals/feed/other supplements dry when they are out and about? Or do you only offer them inside?