BOILED EGG... they hate it... at least my hamsters do.. put something smelly in there .. To catch my hamsters, we trap the room off that they ran into. They're sneaky, smart guys. I've heard of rats attacking and eating chickens .. KILL EM' QUICKK! LOL! They're also a sucker for food. Mice don't really like peanut butter. Try some fresh veggies on the trap, or put some poisoned food where the girls and your lab can't get to it. I hope I helped !