Ohio Rev. Code Ann. § 909.17

The director of agriculture or his representatives shall prosecute all violations of sections 909.01 to 909.18, inclusive, of the Revised Code, before any court of competent jurisdiction in the county in which the violation occurs or person accused thereof resides. The complainant shall not be required to give security for costs. The prosecuting attorney of each county, or the attorney general, shall conduct such prosecutions.