Whenever conditions inside or under unoccupied business buildings provide extensive harborage for rats (In the opinion of the health officer) said health officer is empowered to require compliance with the provisions of Section 5.16.030 above and, in the event that said conditions are not corrected in a period of sixty (60) days, or within the time to which a written extension may have been granted by the health officer, the health officer is empowered to institute condemnation and destruction proceedings. (Ord. A-143 §8, 1949).