(a) The penalties provided for violations of § 43-8-103 do not apply to:

(1) Any carrier, while lawfully engaged in transporting a pesticide within this state, if the carrier shall, upon request, permit the commissioner or the commissioner's designated agent to copy all records showing the transactions in and movements of the articles;

(2) Public officials of this state and the federal government engaged in the performance of their official duties;

(3) The manufacturer or shipper of a pesticide for experimental use only:

(A) By or under the supervision of an agency of this state or of the federal government authorized by law to conduct research in the field of pesticides; or

(B) By others if the pesticide is not sold and if the container thereof is plainly and conspicuously marked “for experimental use only — not to be sold,” together with the manufacturer's name and address; provided, that if a written permit has been obtained from the commissioner, pesticides may be sold for experimental purposes subject to such restrictions and conditions as may be set forth in the permit; or

(4) Any person who establishes a guaranty signed by, and containing the name and address of, the registrant or person residing in the United States from whom such person purchased and received in good faith the article in the same unbroken package, to the effect that the article was lawfully registered at the time of sale and delivery to such person, and that it complies with the other requirements of this part and part 2 of this chapter, designating this part and part 2 of this chapter. In such case the guarantor shall be subject to the penalties that would otherwise attach to the person holding the guaranty under this part and part 2 of this chapter.

(b) This part and part 2 of this chapter shall not apply to any preparation, drug, or chemical intended to be used or sold solely for medicinal use or for toilet purposes.