My cattle just don't consume much mineral-lyx. My 250 lb barrels are often out for several months with around 25 head on them.  They have a lot of other good forage to eat, aren't often hungry and don't need to fill up from the mineral-lyx barrels.

I think that once cattle get their internal minerals in balance, they just don't seem to consume all that much, even though it's in a molasses base. If you try these consumption initially would probably be much higher. My cows have been on these so long they likely don't have any mineral deficiencies.

This year they seem to go through 50 lb Stockman's salt blocks more often than the 250 lb Mineral tubs.