The best way to prevent mice from getting into your house is to dig a trench about three feet deep and three feet wide all around it. When the sun goes down and the moon comes up, flood the trench with gasoline and light it. Turn off the gasoline in the morning when the sun comes up and the moon goes down.

Another way is to take a hint from the moorings of ships and put a mouse/rat guard over your house. Not only will this keep the rodents out, it will also protect you from the secret rays They are beaming down to turn your brain into microwaved mush.