We have recently acquired our first two goats: Isabelle, a fourteen month old dairy goat, and Phillisa, a five and a half month old whom we're hoping to have bred this fall. Where can we buy a not-too-huge salt block for them, and what essential minerals should it contain? They get unlimited hay, and their grain includes (in order of quantity) corn, oats, roasted soybeans, beet pulp, black sunflower seeds, molasses, goat pellets of some sort, yeast, vitamin E, and white salt. We're kind of new at this, so any input would be appreciated. Oh, I mentioned in another post that Isabelle's milk seems to be getting bitter, and I wonder if it could be a mineral or salt issue.