I don't know. Mopping is pretty easy, even enjoyable. And the gig comes with free cases to stripper friends!
the strippers from the club across the street do come in quite often for the 15% stripper discount (they get little outfits, mostly), but the people in the back are mostly gay truckers and farmers and the occasional pastor who are married and ashamed. you know, the kind of people who openly condemn gay marriage because of all the self hate. they're also quite nasty. it's not uncommon for them to pee or poo in the trash cans back there.
Ask him what the job title was. Did they say "janitor," or embrace it and actually call it "jizz-mopper"?
we'll.. I guess if this is the level you want to go to... guess it is better then standing in cum.. hell you;d probably thank him/her for it.