I didn’t get to go to lambing school yet. I fed copper, cobalt, boron and sulfur plus the Redmond salt, domolite and kelp. If you take out the kelp it cost $7 each a year. They ate the copper 3x faster than any of the others. I don’t know how that compares to Southern States mix.
Sydel has a 5 compartment plastic feeder you can hang on a fence that is easy to move.