Surely just squiring water at the affected part will not on its own clean it?
Am I correct in thinking that some form of scrubbing (gently) is also required?
Therefore I ask myself is this what your left hand is for?
if so why are nearly all the sinks in bars and restaurants outside the loo.
Sorry if this is too graphic a picture

Thinking that I shall continue as in the past and allow the maids to think what they like, after all I am... BRITISH
del