Place one of these rocks out and make sure you have a camera on it, because this rock is a One Stop Shop for vital minerals and attractants that can draw whitetail in from all over the county.? The Rack Rock™ will prove to be one of the most effective and efficient ways to provide all the necessary mineral nutrition that deer lack and crave in their daily diet.? The Deer Cane Black Magic Rack Rock™…BRINGS THE RACK!!