I agree with giving something back. Seems like there is something that we can do.
Any type of mineral block is illegal here in Michigan.(though they are sold and put out regularly)
As more of a hunting tool, about ten yrs ago, I began putting fertilizer stakes around oak trees and some wild apple trees that I know of. I found that deer will walk across forty acres of acorns to eat under the trees that I have fertilized. The acorns are bigger, more plentiful, and the trees produce every year for the most part.
Again, originally I thought it might help my hunting, and it did. But the deer benefit from it also. I like to think so anyway.
Deer will use the habitat they live in to the fullest benefit. Anything we can do to offer them more is a plus.
Truely wild deer live in roadless tracts in Minnesota, and forty acre plots in Illinois.
We have the knowledge to manage them for the better of the habitat, and the animals in both situations.
Imagine what we could have if we all "give back"
something.