Section 538.28 - Local government regulation(1) The regulation of purchase transactions involving regulated metals property is preempted to the state. Except as provided in subsection (2), an ordinance or regulation adopted by a county or municipality relating to the purchase or sale of regulated metals property or the registration or licensure of secondary metals recyclers is void.(2) This part does not preempt an ordinance or regulation originally enacted by a county or municipality before March 1, 2012. Such ordinance or regulation may subsequently be amended to incorporate any provision of this part.(3) This section does not apply to a county as defined in s. 125.011(1) until July 1, 2013.