We use some of the red trace mineral in our mix. The deer really love it. We have some pics out of what they are doing and you can look at them at www.sccoutdoors.com . This is the time of year that minerals are most benificial to the deer. You should look for something that helps mainly in these 3 things, Antler development, Weight gain and milk production. If you help these 3 things then the whole herd will benifit. Don' t forget in QDM that there is no overnight fix. If you want results it will take alot of planning and a whole lot of action.