I have tried the loose mineral and the blocks. I even had salt and mineral mixed in with the feed. They seem to prefer blocks. my question is how do you guys put them out. do you cover them or just todd them at at various places on the ranch. also does anyone feed the %37 protein blocks. I started a couple monthes ago and my cows have never looked better. I don't know if it is a compliment to the grass or what but it sure seems to be keeping a good body score on them around calving and after.