Ohio Rev. Code § 3719.31: Prohibition against careless distribution of samples containing drug or poison.

No person shall leave, throw, or deposit upon the doorstep or premises owned or occupied by another, or hand, give, or deliver to any person, except in a place where it is kept for sale, a patent or proprietary medicine, preparation, pill, tablet, powder, cosmetic, disinfectant, or antiseptic, or a drug or medicine that contains poison or any ingredient that is deleterious to health, as a sample or for the purpose of advertising.

As used in this section "drug," "medicine," "patent or proprietary medicine," "pill," "tablet," "powder," "cosmetic," "disinfectant," or "antiseptic" includes all remedies for internal or external use.