Attract more deer with the treeline Deer Protein Block Supplement. This deer protein block is a self-fed protein, vitamin and mineral supplement for growing and breeding deer. Fortified with key vitamins and organic trace minerals, this organic deer protein supplement offers high nutrient value with a delicious apple and molasses flavoring that deer love. For best results, place blocks 15 to 20 ft. apart. Look for a place on the ground that has a thin layer of dirt and leaves, and wait as the deer enjoy. treeline's Apple Addiction is available in a 25 lb. size. Shop more deer feed options from treeline today.