custodian
noun
Definitions
A person entrusted with the custody or care of something or someone; a caretaker or keeper.
Example: After their parents' death, their aunt became the children's custodian.
A janitor; a cleaner
Example: The custodian does such admirable work, deftly wielding a mop to keep our hallways and sidewalks free of buai pekpek left by people who chew betelnuts to be "cool" but don't even bother finding a rubbish bin or spit cup to dispose of the pekpek with.