Miss. Code Ann. § 75-31-507: Miss. Code Ann. § 75-31-507

A milk processor shall not purchase raw milk from a dairy farmer unless:

(a) Payment of the purchase price is made according to the provisions prescribed by an applicable federal milk marketing order;

(b) Any initial or additional provisions are agreed on by both the dairy farmer or his agent and the milk processor; and

(c) The medium of exchange used is cash, a check for the full amount of the purchase price, or a wire transfer of money in the full amount.