Iowa Code § 201A.5
The department shall inspect agricultural liming material distributed in this state and investigate persons engaged in the business of manufacturing, distributing, selling, offering for sale, or exposing for sale agricultural liming material in this state. Inspections and investigations shall be performed as determined necessary or practicable by the department, in order to ensure compliance with this chapter. The inspection may include the sampling, analysis, and testing of agricultural liming material, as provided by rules adopted by the department. The department may enter premises of a business engaged in the manufacture, distribution, sale, offer for sale, or exposure for sale of agricultural liming material in this state. The business shall provide timely, convenient, and free access to its agricultural liming material and to its books, records, accounts, papers, documents, and any computer or other recordings relating to the business, during normal business hours. The business shall facilitate the examination and aid in the examination to every extent feasible.
Iowa Code § 201A.5
96 Acts, ch 1096, §7, 15