Not a mouse
Shall disturb this hallowed house:
I am sent with broom before,
To sweep the dust behind the door.

– William Shakespeare

A Midsummer Night’s Dream, Act 5, Scene 1. Puck is at Theseus’ palace after midnight to ensure that peace reigns. With the lovers in their beds, he pledges that no one, not even a mouse, will disturb the place. Oberon has sent him to sweep away the dust and prepare the house for fairy time.