The director is authorized to make frequent and unannounced inspections of existing business buildings within the corporate limits of the city for the purpose of determining any rat infestation, and order by written notice either the owner, occupant, agent, or any other person in custody of any rat-infested business building to protect such business building by rat-stoppage as provided in this chapter, regardless of the need for the remodeling of or repairs to such business buildings, and further order that such other rat control methods be employed as may be deemed necessary by the director to maintain business buildings free from rats. The written notice or order must specify the time, in no event less than 15 days, for completion of such work and improvements. Unless such work and improvements are completed in accordance with the written order or notice by either the owner, whether individual, partnership, corporation, occupant, agent, or any other person in custody of the business building within the time so specified or within the time to which a written extension has been granted by the director, then, in such event, the owner, occupant, agent, or any other person in custody of the building shall be deemed guilty of an offense under this chapter. (Ord. Nos. 7847; 27697)