Mo. Rev. Stat. § 196.545: Unlawful sale of dairy products.

It shall be unlawful to sell, offer or expose for sale, or deliver manufacturing milk or any dairy products made from manufacturing milk which:

(1) Are produced by animals afflicted with a contagious or infectious disease deleterious to man or detrimental to milk quality;

(2) Are not colostrum free or which have been taken from a cow fed or in contact with any substance that is unhealthful or that may produce unhealthful, impure or unwholesome milk;

(3) Are adulterated by the addition of any unauthorized substance including water or other material foreign to milk;

(4) Have been handled by any person afflicted with an infectious or contagious disease; or

(5) Are produced in unhealthy or unsanitary surroundings or held in unclean or unsanitary containers.