The director of health or his or her authorized representative is empowered to make unannounced inspections of the interior and exterior of both business and residential buildings to determine full compliance with this chapter, and the director of health or his or her authorized representative shall make periodic inspections of not more than three (3) months of all ratproofed buildings to determine evidence of rat infestation and the existence of new breaks or leaks in their ratproofing and, when evidence is found indicating the presence of rats or openings through which rats may again enter buildings, the director of health or his or her authorized representatives shall serve the owner or occupants with notice and/or orders to abate the condition found. (Prior code § 18-22-4)