I make my own

50 pounds stock salt
50 pounds trace mineral
50 pounds dried molasess
50 di-calcium phosphate (for antler growth)

Mix it all in a 55 gallon trash can. Put it in 5 gallon buckets. Pour it on the ground and rake it in. A little water on top will help get it going. It will do 6-8 sites. I replenish it every 6 months, usually March and September. They would dig a whole to china if they could. I actually think that you end up in the ocean but all the cartoons end up in China so who knows.