2006 New York Code - Cleaning Of Interior Of Dwelling Units.

 
    § 27-2012 Cleaning of interior of dwelling units. a. The occupant of a
  dwelling  shall  maintain the dwelling unit which he or she occupies and
  controls in a  clean  and  sanitary  condition  except  as  provided  in
  subdivision  b  of  this section. b. The owner of all rooming units in a
  rooming house or an  entire  multiple  dwelling  used  for  single  room
  occupancy,  or  the person in control of an apartment containing rooming
  units, shall clean any such unit before any change in occupancy  and  at
  least  once a week during the period of occupancy and shall at all times
  maintain the same in a clean and sanitary condition.