Mouse Problem

So, I was already tired from staying up late, and my roommate Casey wakes me up at 5:30 repeating that there is a mouse in his dresser eating cookies he stashed in there. I really just wanted to go to bed. He makes me get up, and listen in his dark room. I did hear rustling in his dresser, so I believed him. He freaks out and responds by saying there's no way he can go back to bed. Casey decides to go to Wal-mart at 5:30 AM to buy some mouse traps.

While he was gone, the mouse runs out of his room, keeps along our wall, and hides behind several stacks of piano music, and Casey's digital piano. I jump up and stand in the doorway between our kitchen and the living room where the mouse was. Our front door is right next to the piano so I decide to open it and pray the mouse will just run out. Thankfully, we're PRETTY sure it did. Casey came back with the mouse traps, and we checked behind everything and no mouse! YAY!