Multiple Occupancy. Every owner, agent or operator of two or more
dwelling units or multiple occupancies, or nonresidential structures
and rooming houses, shall be responsible for the extermination of
any insects, rats or other pests in the public or shared areas of
the structure and premises. When infestation is caused by failure
of an occupant of a unit of the two or more dwelling units or by an
occupant or lessee of a nonresidential structure to prevent such infestation
in the area occupied, the occupant shall be responsible for such extermination.