MSM all the way! To avoid it blowing away, or getting sifted to the bottom, if you don't feed beet pulp, thry mixing iit in a bit of oil, mollasses, honey, whatever, then mixing it in. There are some liquid varieties out there as well. Not sure about where you are, but I'll assume you live in the US somewhere, and I am in Canada, so the market would be very different up here.