Al, I believe someone left the door open, and now, we too, have a new moving plush carpet.
Al I found a handful of them in my pants drawer! Unacceptable!
These things must go. A coordinated attack, perhaps.
We each take a wing, open all the doors (I assume locked ones aren't a worry),
accio the bastards out to the hall and then destroy them. Once a wing is 'secure' we ward the damn thing and move on to the next.
Does this work? Anyone have a better idea?