(a) The owner, manager, or person in charge of the nursery product, florist item, or premises is liable for all expenses of treatment or destruction under Section 71.046 of this code.
(b) The department or the county attorney of the county in which the premises are located may sue to recover expenses under Subsection (a) of this section. If successful, the department or county attorney is entitled to an award of all costs of suit, including attorney's fees.