I live in Chicago and my hive is set up on the roof of my brick two-flat. Does anyone think mice would/could crawl up to the roof and try to get into the hive? I have seen mice on occasion in my garden but it never occurred to me that they could actually climb up to the roof. It seems unlikely but I was getting ready to put in the entrance reducer since temps here have been unseasonably cold for October and thought I should maybe consider getting a mouse guard instead. Any thoughts?