Section 6025.4 Of Article 6.5. Vertebrate Pest Control Research From California Food And Agricultural Code >> Division 4. >> Part 1. >> Chapter 9. >> Article 6.5.

. (a) Notwithstanding Section 597u of the Penal Code, carbon monoxide may be used for the control of burrowing rodent pests, provided the following conditions are met:
  (1) The carbon monoxide delivery device shall be permanently affixed with a warning label in plain view of the operator that includes, at a minimum, the following information: