Mo. Rev. Stat. § 441.236

In the event that any premises to be rented, leased, sold, transferred or conveyed is or was used as a site for methamphetamine production, the owner, seller, landlord or other transferor shall disclose in writing to the prospective lessee, purchaser or transferee the fact that methamphetamine was produced on the premises, provided that the owner, seller, landlord or other transferor has knowledge of such prior methamphetamine production. The owner shall disclose any prior knowledge of methamphetamine production, regardless of whether the persons involved in the production were convicted for such production.