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.
The ReptiCare Day/Night Timer automatically turns your daytime lamp on in the morning and off at night, and automatically turns your nighttime lamp or heater on at night and off in the morning. These outlets are grounded for safety, making this timer reliable, safe, and the perfect way to replicate natural light for your reptile!