Nice but illegal here in PA. The PGC doesn't want deer to congregate for fear of spreading CWD!. This IMO is total BS. Where I hunt if you see 3 deer together chances are it is a doe with 2 yearling fawns. When I started hunting 55 years ago it wasn't uncommon to see 15 - 20 or even more deer in one group.
I think providing minerals for the deer and other wildlife is a good thing. It gives the doe nourishment to produce more milk for her young and gives the buck the minerals needed for good antler development. In addition it provides all local wildlife the necessary supplements to recover from the long winters.