Ohio Revised Code Title XXXVII. Health Safety Morals § 3794.06

(A) “No Smoking” signs or the international “No Smoking” symbol (consisting of a pictorial representation of a burning cigarette enclosed in a red circle with a red bar across it) shall be conspicuously posted in every public place and place of employment where smoking is prohibited by this chapter, including at each entrance to the public place or place of employment. Signs shall be of sufficient size to be clearly legible to a person of normal vision throughout the areas they are intended to mark. All signs shall contain a telephone number for reporting violations.

(B) All ashtrays and other receptacles used for disposing of smoking materials shall be removed from any area where smoking is prohibited by this chapter.