Mice tend to be nocturnal or crepuscular, but they are intelligent animals that adapt to you. They are most likely to be active when you are not there or inactive.
Mice are known to make squeaking or even high-pitched singing sounds, especially when babies are present or when the males are trying to find a mate. Rats can make squeaking, hissing, and chattering sounds.
Mouse Movement Noises
Many mouse sounds are produced by their claws digging into surfaces to get a better grip, or when they scurry from one place to the next. Additionally, rodents will chew wooden baseboards to create larger holes for entrance or new pathways. As rodents move across baseboards, drywall, and floorboards, you are likely to hear the light pitter-patter of footsteps.