Grand jury is so named because traditionally it has greater number of jurors than trial jury, called a petit jury (from the French word petit meaning small).
Although mice tend to come out in the night when most of the occupants of the house are asleep or immobile. This allows them to stealthily infiltrate any of your food bags, crumbs etc. During the day time, mice will normally not come out, but if opportunities exist then they surely can.
What to Do If Your Cat Keeps You Awake at Night. To prevent your cat from disturbing you while you sleep, try the following suggestions: Schedule a few interactive play sessions with your cat during the evening. Try using toys that can mimic the movement of mice and birds, such as toys that dangle and wiggle.