Section 27-2019. Elimination of harborages

All building material, lumber,
  boxes, cartons, barrels, containers, machinery, raw material, fabricated
  goods, junk, food, animal feed and any other substance which may  afford
  harborage  or  provide  food for such rodents or insects and other pests
  shall be kept stored or handled  by  the  owner  and  tenants  of  every
  dwelling  in  such  manner as the department may require. The department
  may make orders to  eliminate  rat  harborages  to  the  person  who  is
  responsible for the conditions. The department shall uncover and inspect
  periodically  all  structural harborages which cannot be eliminated from
  dwellings.