Sec. 1. (a) As used in this section, "unit" has the meaning set forth in IC 36-1-2-23.
(b) After December 31, 2009, a unit may not adopt an ordinance concerning regulation of commercial dog breeders that imposes more stringent or detailed requirements than the requirements under this article. A unit may enforce an ordinance concerning regulation of commercial dog breeders that imposes more stringent or detailed requirements than the requirements under this article if the ordinance was adopted before January 1, 2010.