Mo. Rev. Stat. § 416.430: Sale by bulk milk handler at less than cost — evidence.

1. No bulk milk handler shall, with the intent or with the effect of unfairly diverting trade from a competitor, or of otherwise injuring a competitor, or of destroying competition, or of creating a monopoly, advertise, offer to sell or sell within the state of Missouri, bulk milk, raw or pasteurized, that is intended for the processing of any milk product for less than the cost to the bulk milk handler.

2. Proof of the advertising, offer to sell or sale of bulk milk by a bulk milk handler for less than cost to the bulk milk handler is prima facie evidence of a violation of this section.