Ceiling full of mice

So I had a bet going today at school on how many mice I have in my ceiling. Some said 2 some said 3. I heard them all last night. Want to know how many? NONE. yeah they got right up off that sticky paper and scurried away. So now I have 17 mouses sticky glue paper catchers around my house. Most in my ceiling with mouse food. Oh and the guy won't be back for another week and a half to check on it. If the mouse screams, then I will know I have caught it. Until then.........