Mo. Rev. Stat. § 273.359
Any person required to have a license under sections 273.325 to 273.357 who houses animals in stacked cages without an impervious barrier between the levels of such cages, except when cleaning such cages, is guilty of a class A misdemeanor.
(L. 2011 S.B. 113 & 95 § 1, A.L. 2011 S.B. 161 § 1)
Effective 4-27-11