I should mention, cheap mineral is not always better. The most expensive is not always better. You want to find one the cows will eat and do well on. If the dirt eating does not clear up, or if they go after fence posts(clearing a fence line faster that you can shake a stick), or like the taste of wire (say 25 feet of copper), or decide the rails on your corrals need abit of marking and taste testing, then your mineral is not doing the job it is intended to
Just some thought from experience...
Oh yeah watch any tractors or machinery you leave in a pasture...they can strip the electrical system or the seat cushion in the time it takes you to turn your back for 5 minutes...can't tell you the number of times hubby rewired the tractors, or hunted the farm for parts to cushion the seats again...
All above experiences came to an end once we changed the mineral brand. The wire eater had developed a bad habit, was costing the farm more and more, so she got shipped...brought a dang good weight i might add