20# PURINA PREMIUM DEER BLOCK - Convenient way to attract and feed deer year-round. Purina Premium Deer Blocks contains Purina AntlerMax Extreme Energy™ supplement to help support natural forages. Purina Premium Deer Block is a highly-palatable, easy-to-use 20-pound premium block supplement for attracting and maintaining deer. Improved Premium Deer Block provides more balanced nutrition for deer than whole grains.