I’ve added small animal traps.
Why? 1) they work 24 hrs a day, so even when you are sleeping, they can be trapping animals. 2) They don’t call attention to you like shooting does. 3) You aren’t using up ammo. 4) They provide both a source of meat and can rid yourself of vermin.
Also if you use a live animal trap, you can capture breeding stock (eg, rabbits) that can be transferred to cages.