Quoft flicked his wand toward the Great Hall, moving the cleaning regime toward the more daunting task. He watched for a moment to be certain that the rags (and a small army of back-up rags) were doing their job, then directed a supply closet open to get the mops started on the Entrance Hall.
"Idiots without supervision will always get into some sort of trouble," Quoft replied, bored as he folded his arms over his chest and watched the mops do their work.
He wasn't looking forward to the start of term. He'd have to do mopping by hand to better keep the students from trampling the mop or deciding to charm it to do something else.