Fortunately, we’ve got a number of homeless cats in the neighborhood. They take good care of the rat/mouse population. Now if they’d just go after the chipmunks too ….
As for knives, I’m a lot like 74 – they’re all over the house in various varieties and sizes, (almost) all kept well sharpened, and one in each glove box of our vehicles (Gerber-type multi), along with multiple knives in our bobs. I normally only carry a small Case knife in my pocket, but have thought about carrying my old Air Force issue switchblade since they are now legal in our state for CC holders (guess I’d have to finally fold in the hook blade – it’s never been folded in since issue).