(a) A person required by Section 167.030 of this code to clean and disinfect a conveyance commits an offense if the person fails or refuses to clean and disinfect the conveyance in accordance with the rules of the commission.
(b) An offense under this section is a Class C misdemeanor for each car or other means of conveyance not cleaned and disinfected unless it is shown on the trial of the offense that the defendant has been previously convicted under this section, in which event the offense is a Class B misdemeanor.
(c) A person commits a separate offense for each day of failure or refusal.