A 30-day notice that landlords must serve on residential tenants to terminate a tenancy based on the tenant's breach of a statutory duty imposed under the Ohio Landlord-Tenant Act. This Standard Document satisfies the notice required before a landlord may serve a three-day notice to leave premises and bring a forcible entry and detainer (FED) action to evict the tenant under the Ohio Revised Code. This Standard Document has integrated notes with important explanations and drafting tips.