Whitetail Institute 30-06 Mineral/Vitamin "Plus Protein" Deer Supplement is great to use alone or in conjunction with a food plot. This supplement provides deer with vitamins and minerals that are crucial in overall development and health. The 10% protein addition makes this the perfect supplement to use in areas where there are fewer good food sources for deer. It also maximizes antler growth, helps hold deer on your land and attracts deer from other areas. 30-06 Deer Supplement is easy to use and should be maintained all year for the best results.