Hi. I just discovered a mouse nest under my IPM bottom board and on top of the counting board, they had the counting board pulled away so they can fit in there. I removed the nest and the counting board since it was covered in mouse urine and feces, but now I wonder how to prevent them from returning? They aren't "in" the hive so a mouse guard won't help. The hive is up on cinder blocks and in an area where there are surely many mice. I am sure there will be more problems, just not sure if this is one to prevent if they aren't in the hive. I am hoping as the colony builds up, the mice will be discouraged. Any thought?