Solution:
5 gallon bucket with a cover.
Cut small hole in the cover - maybe 3/4 inch or so.
Put peanut butter at the bottom of the bucket, and
maybe a little on the underside of the cover, but
about 4-5" away from the hole.
Mice love peanutbutter, will go in after it, unable to
escape.
"humane" mouse trap.
The poison route is far more dangerous to other animals
that may feed on (snakes, predator birds), or play with
(cats & dogs) the mice. You'll find dead stuff on your
property. I know, my folks used to have a rat problem on
their "ranch/farm" back in the 90s. We did the poison.
It worked, but killed other things we didn't mean to harm.