Herd Guard Buck-On-A-String Year Round Hanging Deer Attractant, 15 lb All-natural protein, and mineral packed block that deer breeders have been using for generations Contains 24 Trace Minerals, 18 percent Crude Protein, Magnesium, Phosphorus, Selenium, SUPER ATTRACTANTS and the required salt! Hangs from a tree making your herd less vulnerable and keeps other ruminant animals such as raccoons away from the block which reduces cross contamination in your herd All natural ingredients Provides energy that is necessary for optimal growth such as better antler/bone development, larger bodies, good blood flow and healthy reproduction