No person shall distribute samples of any drugs or medicine, or any corrosive, caustic, poisonous or other injurious substance unless the person delivers it into the hands of a competent person, or otherwise takes reasonable precautions that the substance will not be taken by children or animals from the place where the substance is deposited.
(Iowa Code § 727.1) (1999 Code, § 41.01) Penalty, see § 10.99