Yes. I know.
Despite having three cats, we have mice under the floorboards of the front room.
I can hear them squeaking now and then.
We have seen one mouse but actually think that was one brought in and released by the cats. So a coincidence.
We've blocked up all holes but one (old terrace house) and have put down snap traps and humane traps and tried shutting cats in the room (all at once and separately) but haven't caught so much as a whisker.
Planning to put peppermint oil, cat hair and wire wool in all gaps today.
There's no food sources for them - I'm strict about everything being sealed because our cats sometimes bring in additional mice. Bins emptied, toddler crumbs cleaned up etc. We also have robot hoovers that eat food debris.
I can't use poison because of the risk of cats eating a poisoned mouse.
We've bought a sonic scarer.
But is there anything else we can do?
Ps. The cats are actually really good hunters normally.