I think they still make noise in the attic, but between some renovations that I did last year and the two civilized furry residents that moved in, they shouldn't stand a chance in the living space here.
You have civilized furry residents? I had no idea.
For some reason Nancy didn't want to put them in the storage unit with her furniture.
We have traps up along the sill in the basement to keep them out of reach of our furry ones, but when we catch a mouse (and trap then falls off the sill), they are sure to bring the mouse/trap combo upstairs and leave it on the back mat for our prompt disposal in the morning.
With a stone foundation in our 1810 house, mice are a constant battle. We started out trying to do traps ourselves, but got up in the dozens in very short order. So we've been using an excellent pest control guy--small local business, not the names-you've-heard-of national businesses constantly trying to upsell you to a more expensive monthly plan. He comes when it is seasonally and situationally appropriate and only charges $350 year instead of $75 and up every month, and takes care of whatever needs taking care of: wasps, rodents, ants, etc.
It did help when we had our back deck repaired and discovered while it was opened up that there was a major (half a foot or a foot) hole in the foundation (the mouse highway, we called it). We had a mason fix it, after which the flood of mice has died down to a trickle. There will always be cracks they can work their way through the stone foundation, but at least it's a more manageable level.
It would be good to find a good local de-mouser like that. Unfortunately these new cats of ours are way less interested in rodent control than our former cats were.
Time to sit down and have a good talk with those cats.
A daunting prospect. They're a somewhat surly lot.
Maybe they're trying to chase the humans out?