Mouse in apartment, help??

[Schneids]

Roomie and I finally gave up and went to sleep around 9:45amET. Had towels under door to room so pretty sure it felt safe. Woke up 4pm eastern time, no idea where mouse is now, roomie says he heard it running through our vents last night. Apparentlyt his mouse (or others like it) have also been seen in few other peoples' places right around us.