Idaho is among several states that allow you to keep roadkill for personal use and consumption as long as you follow procedure and mind some exceptions.
If you are in an unfamiliar area hunting or even hiking this fall, and you see an orange on a tree, a fence post, or another object, stop, turn around, and walk or run the other way.
To most, Idaho is a cheaper state than where they are coming from, and that is what appeals most to them, but maybe Idaho isn't the right state for them to live in.