(2) Subsection (1) of this section does not apply to:
(a) Employees or agents of the State Department of Agriculture engaged in the regular discharge of their duties.
(b) The alteration, defacement or removal of markings on any type of food or other agricultural product in the normal course of sale and distribution thereof.
(3) No person shall sell food or other agricultural products in or from a used container bearing any of the markings referred to in subsection (1) of this section unless such person first removes or defaces such markings. [1955 c.11 §1]