So light I cleaned all cages, removed all the food out of the hoppers and put it in the tubs. Then I moved the extra food inside the house. I set up some mouse traps along the edges of the room and also a few in the center of the room. Went in this morning and found 2. I'm going to rinse and repeat until I see no more traces and stop catching them. I think I might be leaving extra traps down even when the problem is gone just for safety reasons. Does anyone know if there is something you can put around the room or spray that will keep them out?