does anyone thats not a deer cocaine salesmen know if the red trace mineral blocks for livestock are beneficial to deer in any way and if it is safe for them. i know its not gonna make for monster antlers but i do think salt licks are beneficial especially this time of the year for fawn health and bug control.i read one book that says to use just regular salt but if they can use the minerals without harm i would like to give it a try. the label on the red trace bricks say something about the copper in it isint good for sheep so thats the reason i would like to know if its safe for deer for sure.