Notwithstanding any other provision of law, the local governmental units of this state may neither enact nor enforce any ordinance or other local law or regulation conflicting with, or preempted by, any provision of sections 299F.850 to 299F.858 or with any policy of this state expressed by sections 299F.850 to 299F.858, whether that policy be expressed by inclusion of a provision in sections 299F.850 to 299F.858 or by exclusion of that subject from sections 299F.850 to 299F.858.