Antler King has researched deer nutrition for over 30 years. In the past couple of years, research has pointed to the vast importance of certain special trace minerals that will greatly enhance overall health and antler growth. ANTLER KING’S POWER RACK is loaded with these SPECIAL trace minerals and in the proper proportion. POWER RACK may be used as the sole source of your mineral feeding program or for MAXIMUM ANTLER GROWTH, mix one bag of POWER RACK with one bag of ANTLER KING’S TROPHY DEER MINERAL.