my son is not that fond of cats -
but we have a couple (actually the dogs have pets) cats inside and a few very tame feral cats that live in the outbuilding where I have a shop (insulated kennels in there for them) -
so, my son calls me one day complaining a mouse had chewed through the wires on one of his tools. then he says "how do you keep mice out of your shop?"
insert pause here
then he says "oh, never mind"
PS
if you are a mouse trying to cross the yard- or even the fields - this may be the last thing you see - she is very efficient