Andreas commissioners say they had to have a sink unblocked in the village's public toilets at the weekend.
The local authority took to Facebook, saying someone had cleaned muddy footwear in the sink in the gent's loos.
They say that blocked the drain and meant a callout to clear up the mess.
On Facebook, the board's asking those responsible not to do it again.
Larger number of western homes to be without water
Do you know this man?
Tributes paid to legendary TT team founder
Warning after email scammers impersonate Douglas vicar
Former builder's workshop could become two-storey family home
Urgent Keys question on bus strikes
MHK wants answers on unclaimed benefits cash
Mama Hub launches next month