The Health Officer is authorized to make such unannounced inspections of the interior and exterior of business buildings as in his opinion may be necessary to determine full compliance with this subchapter, and he shall make periodical inspections at intervals of not more than 60 days of all rat-stopped buildings to determine evidence of breaks or leaks in their ratproofing. When any evidence is found indicating the presence of rats or openings through which rats may enter, or any conditions that need remedying, in order that such building may be in ratproof condition and freed of rats, he shall serve the agent, owner or occupant of such building with notice to abate the conditions found and may specify what such agent, owner or occupant shall do in order to comply with the notice. Without limiting the generality of the foregoing, the Health Officer is authorized to notify such agent, owner or occupant to do any or all of the following:
(A) Ratproof the building;
(B) Repair breaks and leaks in existing ratproofing; and/or
(C) Whenever conditions inside or under a business building provides such extensive harborage for rats that the Health Officer finds it necessary to eliminate such harborage, the Health Officer may require the owner to install suitable cement floors in basements or to replace wooden first or ground floors or require its owner to correct such other interior rat-harborage as may be necessary in order to facilitate the eradication of rats in a reasonable time.
('70 Code, § 11-20)