Mo. Rev. Stat. § 150.465: Sale by itinerant vendors and peddlers of baby food, drugs, cosmetics, devices — exception — penalty.

1. No itinerant vendor as defined in section 150.380, and no peddler as defined in section 150.470, shall offer for sale:

(1) Any food solely manufactured and packaged for sale for consumption by a child under the age of two years; or

(2) Drugs, devices and cosmetics as defined in section 196.010.

2. This section shall not apply to authorized agents of a manufacturer of any item enumerated in subsection 1 of this section.

3. Violation of this section is a class A misdemeanor.

4. Itinerant vendors and peddlers shall make available within seventy-two hours upon request of any law enforcement officer any proof of purchase from a producer, manufacturer, wholesaler, or retailer of any new or unused property, as defined in section 570.010.

5. Any forged receipt produced pursuant to subsection 4 of this section shall be prosecuted pursuant to section 570.090.