You are a nicer person than I. I rabbit hunted our back pasture 2 Novembers ago and it was almost like the ground was moving there were so many mice. Im sure all the owls, hawks, foxes, bobcats, etc ate good that year!
My hens have pecked and killrd mice they found in the yard and ate oarts of them. Knock on wood, i have never seen a hint of mouse or rat issue in any of my coops.
We just purchased a house that had an infestation of mice. That 1st winter we killed 43 in traps and the cat caught 11 (why do we have the cat again? ) last year it was 23 and this year it has been 0 knock on wood. The difference for us has been cleanliness. The last owners were not good...