Mo. Rev. Stat. § 64.160: Violation a misdemeanor (first class counties).

A violation of sections 64.010 to 64.160 or of any order or regulation adopted under authority of said sections shall be deemed a misdemeanor. The proper county authorities or any persons, the value or use of whose property is or may be affected by such violation in addition to other remedies, may also institute any appropriate action or proceedings by preventing or removing such violation.