It is unlawful for any person to distribute any samples, packages, parcels, boxes, bottles or other quantity of any pills, medicines or any other material of medicinal or alleged medicinal character, or purporting to be a curative agent, or any article harmful to a human being by handing, giving or furnishing the same to any person in parks, streets, alleys or the thoroughfares, or by leaving, casting or depositing the same in yards or upon the premises of any residence or other private grounds, or upon or about school buildings or grounds within the city limits. (1991 Code § 8.36.050, as amended)