ARTICLE II. RESTAURANTS

DIVISION 2. MINIMUM STANDARDS OF OPERATION

(a) All opening to the outer air shall be effectively screened.  Doors shall be self-closing and shall open outward, unless other effective means are provided to prevent the entrance of flies, but it shall be permissible to place and operate an adequate electric fan over the entrance.  All means necessary for the elimination of flies shall be used.

(b) The methods used for the control of flies, vermin and rodents shall be effective at all restaurants.