Food poisoning shouldn't be an issue, most canned food is often good long after the "best by" dates. Those dates are actually more for inventory and tracking. (Food storage and preparedness is a hobby of mine). Also, eating things like squirrel won't upset your stomach. It's meat, and meat that, since municipalities aren't doing lawn care anymore, missing pesticides, antibiotics and hormones. If you can cook raw chicken for a meal you can cook squirrel. My former MIL, a nice southern woman, actually made us squirrel gravy over biscuits one time and it tastes fine.
What I think would be a bigger problem is athletes foot and funguses like that. They don't have baths or showers and it wouldn't take long for those to kick up, especially in that Georgia heat. Those can cause some serious problems, ask any soldier.