18% protein, water-resistant, fortified, year-round supplemental feed block designed to enhance the deer’s natural forage diet without the need for a feeder. Purina® AntlerMax® Deer Block contains the new AntlerMax® Extreme Energy™ supplement which provides nutrition for body condition of deer so they can reach their genetic potential for antler growth.This highly-palatable, easy-to-use 33.3-pound premium block supplement for attracting and maintaining deer contains Purina’s proprietary AntlerMax® By-Pass Protein Technology, AntlerMax® Mineral Technology, Water Shield® Technology and the new AntlerMax® Extreme Energy™ supplement.