Just picked up the DIY recipe that was posted by Tim from the local feed store, 1 #50 bag of the DI-cal, and 2 #50 bags each of the trace mineral and stock salt. Total spent was $58. The one difference is they gave me trace salt with selenium in it. I was wondering what everyone's thought was on Selenium? I have been doing research and the "experts" say it can be toxic in large quantities, but is ok and actually needed in trace amounts. I actually found an old TOO article by Jesse from 2011 where he states that there would need to be a large amount to of Selenium to make it harmful. What say you TOO world?