No they don’t work, at least not in my experience.
IIRC I have seen you post about your fishing/living off the SE Coast.
So you would know about ocean/bay dock rats.
I know they’ve been proven to NOT work, but the funny thing is, ever since my wife plugged one into one of our kitchen outlets near the garage, we haven’t had any mice. We used to get two or three every fall/winter, but for the past four or five years, none.
Even though I know the thing doesn’t keep the mice away, there’s no way my wife is removing it from the wall. No way.
LOL.