California Codes, Business and Professions Code - BPC, Division 3 — Professions and Vocations Generally, Chapter 14 — Structural Pest Control Operators, Article 1 — General Provisions, Section 8505.1
(a) Except as provided in subdivisions (b) and (c), for the purpose of this act, “fumigation” shall be defined as the use within an enclosed space for the destruction of plant or animal life, a substance having a vapor pressure greater than 5 millimeters of mercury at 25 degrees centigrade when the substance is labeled for those purposes.
The following is a list of lethal fumigants:
(1) Methyl bromide.
(2) Sulfuryl fluoride.
(3) Aluminum phosphide.
The board may adopt, and may as necessary amend, by regulation, a list of fumigants.
(b) For the purpose of this act, “warning agent” is any agent used in combination with any fumigant that lacks warning properties.
The following is a warning agent:
Chloropicrin.
The board may adopt, and may as necessary amend, by regulation, a list of warning agents.
(c) For the purpose of this act “simple asphyxiants” shall not be deemed to be fumigants.
The following is a list of simple asphyxiants:
(1) Liquid nitrogen.
(2) Carbon dioxide.
The board may adopt, and may as necessary amend, by regulation, a list of simple asphyxiants.
Notes
Defines “fumigation” generally as using in an enclosed space a labeled substance with vapor pressure above 5 millimeters of mercury at 25 degrees centigrade to destroy plant or animal life, while listing examples and allowing board revisions. Defines warning agents separately and exempts listed simple asphyxiants, including liquid nitrogen and carbon dioxide, from being fumigants.
Use as reference
Lexinter.net | California Code, Business and Professions Code - BPC § 8505.1 | https://laws.lexinter.net/codes/california/business-and-professions-code/division-3/chapter-14/article-1/section-8505-1