Ohio Rev. Code § 913.42
If the director of agriculture or any of his inspectors or agents, is of the opinion that a place named in section 913.41 of the Revised Code is being operated in violation of such section he shall notify the proprietor, owner, or manager thereof, in writing, to place it in a clean and sanitary condition within a reasonable time to be stated in such notice, which time shall not be less than ten days.
The director or any of his inspectors or agents shall post in a conspicuous place in such of the places mentioned in section 913.41 of the Revised Code a copy of the sanitary code adopted by the department of agriculture, printed in plain, legible type.
Upon said notice shall be stamped or written the date of such posting and the inspector shall make a record of such date in a book provided for that purpose. A certified copy of the record of such posting shall be received as prima-facie evidence of such fact in the trial of any cause in any court of this state.
R.C. § 913.42