Any business with an area subject to the prohibition set forth in section 5-4-2 of this chapter shall post or cause to be posted and shall maintain "no smoking" signs in conspicuous locations within said area. All such signs shall be prominently displayed, shall clearly recite the phrase "no smoking" and/or use the international no smoking symbol and shall cite section 5-4-2 of this chapter. Such signs shall be posted not less than five feet (5') nor more than eight feet (8') above floor level and shall be of sufficient number and location to cause the message of the signs to be clearly visible and readable and must be made of permanent, weather resistant materials. No person shall wilfully mutilate or destroy any sign required by this section. Signs required under this section are exempt from the sign requirements in title 10, chapter 4 of this Code. (Ord. 07-O-2518, eff. 10-1-2007)