A night janitor focuses on cleaning a building or facility after business hours. During an overnight shift as a janitor, you handle standard custodial responsibilities, such as cleaning or vacuuming floors, disinfecting surfaces, emptying trash, replacing supplies in restrooms, and making minor repairs if necessary. In addition to cleaning, you also manage the inventory of cleaning supplies and equipment. You occasionally perform more significant cleaning and maintenance tasks, such as waxing floors, steam cleaning carpets, disinfecting bathrooms, and washing interior and exterior windows. Your duties include ensuring that the building remains secure during your shift.