Depeneds on how far from your house you can set up a perimeter. If you’re too good at keeping the vermin out, but your perimeter is too close, they will just burn you out and move on. Pity the poor souls who are not rotting liberal leeches, who live in cities. They will be the first victims of the feral bands. Ever watched the program ‘Jericho’? There are interesting vignettes in that show, some of which are probably well thought out and too close to the truth.
But then the feral bands will fall prey to the National Guard. Because unless there is a widespread nuclear attack, no state governor will give away a city to the feral bands. At least I hope not.