Mark
One thing I would recommend as a backup would be one of the modern slingshots. If you practice a bit it can be lethal on small game and other varmints. Also, it can discourage larger varmints through extreme pain. The steel balls to the head or neck area will get anyone’s attention. While it’s not a replacement for a firearm, if your state or locale has really restrictive gun laws this could very well be something worthwhile to own. Ultimately, you are responsible for what comes out the end of your gun. Be safe, be wise, and be careful.