Our garage is an old, former stables. It was infested with mice a year or so ago.
It was so bad, that I couldnt even park my car in the garage. You would open the door, and you would see them scatter
My best friend lives in the flat above the garage, and although she never saw one in her flat, she was so freaked out, that she had to move into the house.
There was far too many mice to catch with traps, so the gardener put out trays of poison for them. I looked in one evening, and there was dozens of mice trying to get at the trays of poison. I almost puked
He had to come back every day to pick up the bodies of the dead ones
Im still traumatized by the experience