The Ani-Logics Ani-Mineral Block provides your local deer herd with nutritional supplement to fill any gaps in vitamins and chelated minerals the deer might be missing from local food sources. The Ani-Mineral Block offers Copper, Zinc, Selenium and Manganese; plus, it uses Ani-Shield TX4 Technology to support immunity, antler growth, and general health. The mineral block is easy to use, just set it on the ground in a likely spot and deer will find it. Vitamins and chelated minerals Ani-Shield TX4 Technology Enhances antler growth, and general health.