Mo. Rev. Stat. § 195.265
1. Unused controlled substances may be accepted from ultimate users, from hospice or home health care providers on behalf of ultimate users to the extent federal law allows, or from any person lawfully entitled to dispose of a decedent's property if the decedent was an ultimate user who died while in lawful possession of a controlled substance, through:
(2) Drug take-back programs conducted by federal, state, tribal, or local law enforcement agencies in partnership with any person or entity.
This subsection shall supersede and preempt any local ordinances or regulations, including any ordinances or regulations enacted by any political subdivision of the state, regarding the disposal of unused controlled substances. For the purposes of this section, the term "ultimate user" shall mean a person who has lawfully obtained and possesses a controlled substance for his or her own use or for the use of a member of his or her household or for an animal owned by him or her or a member of his or her household.
2. By August 28, 2019, the department of health and senior services shall develop an education and awareness program regarding drug disposal, including controlled substances. The education and awareness program may include, but not be limited to:
(1) A web-based resource that:
(L. 2018 S.B. 718 merged with S.B. 826 merged with S.B. 951)
Effective 7-06-18 (S.B. 718); 7-06-18 (S.B. 826); 8-28-18 (S.B. 951)