That's my experience. If you live in the country, you're going to have mice and there is no final solution. You just keep after them.

Of course do whatever you can to not tempt them to visit. Don't leave any food or candy anyplace they can get to it, and take the cat/dog food up at night. I would leave my dog's dry food out overnight because she liked to eat after I went to bed. That's a bad practice if you don't want mice.

I used to live trap them and give them a new home where some of the outdoor critters might make a meal of them. Too much trouble. Just buy the Victor traps and use them til they're no good anymore. The "myth" about not being able to reuse them is a clever marketing tactic. When I was a kid, no one threw them away. I still don't. Don't think mice are any smarter these days, but Victor likes selling traps.