I had this problem THREE times when the school next door to me dug foundations for construction on three separate occasions.It is DISGUSTING, but we put out poison baits on the food pantry floor and sticky traps along the walls where the mice were seen and they were caught, especially behind the couch. I also (don’t laugh) put the sticky traps in front of the door threshholds to every bedroom, as I was scared of mice coming into the room while were sleeping.
The ick factor was high, and I had terrible guilt feelings when I saw the mice that were caught and made my husband and son put them in plastic bags and get rid of them. Most of the time, we never saw the mice, only that they were no longer around (due to being poisoned and then running off to die) But the ones on the traps haunted me for months. I can’t stand to kill or trap another creature, but they bring disease and filth. They look NOTHING like Mickey or Minnie. So Hashem forgive me, but I did what I had to do.