The department shall have full access to all places, factories, buildings, stands, or premises, and to all wagons, auto trucks, vehicles, or cars used in the preparation, production, distribution, transportation, offering or exposing for sale, or sale of any article dealt with in this subtitle.
Iowa Code § 189.4
94 Acts, ch 1023, §20; 2003 Acts, ch 69, §28; 2012 Acts, ch 1095, § 66