@exyle You can get plugins off the internet that are supposed to emit a sound the mice can hear. Snap traps work really well. If you catch any by the foot just drop the whole thing in a bucket of water. If I sound cruel, we were on 22 and counting. Finally they don't like the smell of peppermint oil so we have placed drops of that by the garage door (entry point) and haven't seen one since. very big crossed fingers. Good luck.