Ohio Rev. Code Ann. § 2921.36
(A) No person shall knowingly convey, or attempt to convey, onto the grounds of a detention facility or of an institution, office building, or other place that is under the control of the department of mental health and addiction services, the department of developmental disabilities, the department of youth services, or the department of rehabilitation and correction any of the following items:
(F)
(2) It is an affirmative defense to a charge under division (C) of this section that the actor was not otherwise prohibited by law from delivering the item to the confined person, the child, the prisoner, or the patient and that either of the following applies:
(G)