The job of keeping the building spotlessly clean and well looked after is the responsibility of the Janitor. JANITOR is an ASL Compound, a single sign made by two hand signs, like the verb attached to a noun (Mop+Person=Janitor).
My ASL Dictionary has cartoons of two Janitors dressed in blue uniforms showing ASL hand signs for MOP and SWEEP, the verbs in the ASL Compound for JANITOR.
A cartoon of a moustached Janitor in a Spick hat shows the ASL hand sign for MOP. Fists move forward in a ‘mopping’ motion as if pushing the mop handle.
A cartoon of a moustached Janitor in a Span hat shows the ASL hand sign for SWEEP. Forward sweeping motion off opposite palm like sweeping crumbs off the table. In context, this hand sign can also mean JANITOR without adding the PERSON hand sign.