After doing a bit of research and finding out that there mineral needs are very similar to cattle I started using the dark brown mineral blocks for cattle; I put a trail cam over the area and notice that the does hit it more just before they have there fawns and the bucks hit it more when they are growing horns. It really does not have as much attraction for them during hunting season but I noticed over a couple years time that the deer population seemed a bit better looking and the buck horns were noticeably better, it makes enough difference here in the pine woods that I keep one out year round. Lee