(a) No owner or occupant of any building or premises shall permit conditions to exist which may allow the building or premises to become a rat harbor. The following enumerated conditions shall not be deemed to be exclusive and are hereby declared to be nuisances as conducive to harboring rats:
(1) Broken walls, building tile, floors or foundations in which there are holes or cracks of a size sufficient to permit a rat to pass through.
(2) Materials, including rubbish, piled, stored or kept on the premises, into, among or under which rats have burrowed or may burrow.
(3) Buildings or garages, or the foundations, floors or appurtenances thereto under which rats have burrowed.
(4) Portable buildings, boxes, crates and materials, including rubbish, piled, stored or kept so that they rest directly on the ground surface or less than eight inches above such surface.
(5) Garbage containers without watertight tops and bottoms or without tight-fitting tops or around or under which rats have burrowed or may burrow.
(6) Feeding of wild animals, birds or other wild life, other than in suitable containers for food, elevated at least thirty-six inches above ground level.
(7) Compost piles or unharvested crops.
(b) No owner or occupant of any building or premises on which any rat harbor condition exists shall fail or refuse within five days after being notified thereof by the County Sanitarian or the Safety-Service Director to abate the same. In addition to any penalty for a violation hereof, such nuisance may be abated by the City in the manner now or hereafter provided by law.
(c) Whoever violates this section is guilty of a minor misdemeanor.