Rightwinger82 i see you are looking at Mcness Cubes. Have you ever considered Mcness Ruffage Mate? Its a 52% protein mineral with 14% of the protein from urea and you can get by with feeding around .5#/hd/day, thin cows maybe a littel more, we have never fed more than .75# though even on old cows or first calves. We use to cake 4# of the same 28% DDG cube every other day and now have went to RuffageMate and the cows have done just as good or better and are way more content. We have fed it now for 3 years and had great results. What made me a beilever was the first winter i fed half the cows cake and the other half RuffageMate. The cows we caked would still come running even on the days we didnt cake and couldnt hardly break ice without the cows mauling you. The cows on RuffageMate were content as can be. We had a 4 to 5" snow and i had a bale of alfalfa on the pickup the cows on RuffageMate just looked at the cake pickup and put their heads back down, the cows we caked every other day had to be fed the bale so we could get out the gate. And the nice thing about RuffageMate is that you regulate it with salt and can manage the consumption vs tubs were you have no control. We put RuffageMate out every 4 to 7 days and it is costing around $.25/day and takes care of your protein and mineral in one bag.