>>42541087no, they use normal toilets now
what's worse tho, there's the Room of Wishes
and Dumbledore once stumbled onto it while needing to shit real bad
and we know the Rooms are persistent and give people the same spaces when they share a similar wish, and that in the meantime time passes normally within the room
which means there's a chance that some kid that really badly wants to piss or shit will one day pass the halway, see the Room of Wishes, open it up and be assaulted by the rancid stank of old man's fecal matter that fermented there for years