The BioLogic BioRock is a mineral supplement for deer. With over 50 minerals, it can go a long way to making your local herd healthier than ever before. Many of the minerals play an important role in antler growth and overall bodily health including calcium, magnesium, phosphorus and sulfur. To use, simply place on a stump or a level area that is well-drained in an area where deer frequent.
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