I got a mineral recipe off of this board last year from a guy who got it from a wildlife biologist. I don' t have it with me but it had trace mineral salt in it, ice cream salt (not rock salt), and some other type of mineral cn' t quite remember what exactly it was. But I bought all of this at my local Agway cost me about 35 bucks total for all of it combined. I had enough to do 5 or 6 licks and freshen them up a couple of times each. The deer seem to love it I haven' t put any on since last august and the deer are really tearing the licks up. Maybe if you ask on this board somebody else has the recipe and they could post it for you. It has to be safe since a wildlife biologist sugessted it. One thing I do remember is that you have to get the trace mineral salt and the other stuff with no medications in it.