Although mice aren't exclusively nocturnal, they tend to be more active at night for a few reasons. These creatures are sensitive to bright lights and have poor eyesight. ... Because mice avoid danger, they may be scared off by bright, flashing lights or loud noises.

What noise will scare mice?

Sounds. Mice are afraid of sonic and ultrasonic sounds. The devices produce high-frequency waves that they find irritating and uncomfortable. As a result, the mice will migrate away from the house assuring you of a mouse-free house.

How do you scare away mice?