When my husband was stationed in Great Lakes, IL, which is where he retired from, they were having a massive deer problem in some of them areas around there. The houses were mansions, and the deer were totally out of control. There is enough open land there to feed them, but the population was never under control, due to the lack of natural predators. So, they had bow hunters come in and thin them out. My husband and a friend were asked by the owner if they would hunt on her private golf course. The place was surrounded by several hundred acres of woods, with more than enough food for the deer, but the deer destroyed over $50,000 in trees that the owner had planted, not to mention the damage they had done to the grass. The owner hated having to go to that extreme, but nothing else worked.
I get irked here in Utah about some of the people who complain about the deer eating their flowers. They've build their houses on the side of the mountains, where the deer have always been, and can't figure out why their flowers disappear. I figure if you're going to live in the deer's backyard, you either feed them your flowers, plant flowers that they don't like, or do something to keep them out of the yard. In Idaho, I know it is going to be a problem for us, keeping the deer away, but I know for a fact that there is more than enough food for them, and my flowers will not be on the menu! I sure do love to watch the deer though!