Ohio Rev. Code Ann. § 323.25
When taxes charged against an entry on the tax duplicate, or any part of those taxes, are not paid within sixty days after delivery of the delinquent land duplicate to the county treasurer as prescribed by section 5721.011 of the Revised Code, the county treasurer shall enforce the lien for the taxes by civil action in the treasurer's official capacity as treasurer, for the sale of such premises in the same way mortgage liens are enforced or for the transfer of such premises to an electing subdivision pursuant to section 323.28 or 323.78 of the Revised Code, in the court of common pleas of the county, in a municipal court with jurisdiction, or in the county board of revision with jurisdiction pursuant to section 323.66 of the Revised Code. Nothing in this section prohibits the treasurer from instituting such an action before the delinquent tax list or delinquent vacant land tax list that includes the premises has been published pursuant to division (B) of section 5721.03 of the Revised Code if the list is not published within the time prescribed by that division. After the civil action has been instituted, but before the expiration of the applicable redemption period, any person entitled to redeem the land may do so by tendering to the county treasurer an amount sufficient, as determined by the court or board of revision, to pay the taxes, assessments, penalties, interest, and charges then due and unpaid, and the costs incurred in the civil action, and by demonstrating that the property is in compliance with all applicable zoning regulations, land use restrictions, and building, health, and safety codes. If the delinquent land duplicate lists minerals or rights to minerals listed pursuant to sections 5713.04, 5713.05, and 5713.06 of the Revised Code, the county treasurer may enforce the lien for taxes against such minerals or rights to minerals by civil action, in the treasurer's official capacity as treasurer, in the manner prescribed by this section, or proceed as provided under section 5721.46 of the Revised Code. If service by publication is necessary, such publication shall be made once a week for three consecutive weeks instead of as provided by the Rules of Civil Procedure, and the service shall be complete at the expiration of three weeks after the date of the first publication. If the prosecuting attorney determines that service upon a defendant may be obtained ultimately only by publication, the prosecuting attorney may cause service to be made simultaneously by certified mail, return receipt requested, ordinary mail, and publication. The county treasurer shall not enforce the lien for taxes against real property to which any of the following applies: