Mice are instinctually afraid of the smell of cats, so the cat would not need to actually kill them to get the desired effect. In this case however when we hav

Mice are instinctually afraid of the smell of cats, so the cat would not need to actually kill them to get the desired effect. In this case however when we have hundreds of new mice each day, the fear effect and eating of mice would likely just be a drop in the bucket. The mice from nearby farmland and forests are fleeing starvation. A single house can collect and kill thousands a week and still more are coming, and the flood of mice can start up from apparently nowhere if you live near such areas. The only good thing is that it will stop at some point, and the professional traps can help to keep the situation at bay.