What California requires
- Whenever a licensee of a Branch 2 or Branch 3 company applies or uses a pesticide, a written post-application notice is provided immediately after the service visit; it may be a door hanger, invoice or billing statement and must include the common, generic or chemical name of each pesticide applied, the date of service, and the registered company's name, address and telephone numberCal. Code Regs., tit. 16, s. 1970.42 (a), (b) (operative January 1, 2025)
- For exterior applications, and interior applications at commercial, industrial or single-unit homes, the notice is given in writing personally or by first-class mail (or by email if authorized in writing); for the interior of a unit in a multi-unit residential building, it is left on the unit's door or inside next to the doorCal. Code Regs., tit. 16, s. 1970.42 (a) (1) to (3)
- Before the work, the owner (or agent) and tenant get a clear written notice naming the pest to be controlled, the pesticides proposed and their active ingredients, the statutory statement beginning "State law requires that you be given the following information" with its caution that pesticides are toxic chemicals and the contact telephone numbers it calls for, and the treatment frequency under a periodic contract; it is given before application (at least 48 hours before for Branch 1)Cal. Bus. & Prof. Code s. 8538 (a), (b)
- The pre-application notice is given by first-class or electronic mail, posting in a conspicuous place, or personal delivery; commercial and industrial buildings also get a posted notice unless the owner objects; with a periodic service contract it is needed only at the first treatment, and again if the pesticide changesCal. Bus. & Prof. Code s. 8538 (b)
- For exterior pest control at multi-unit properties, a "conspicuous place" for posting the pre-application notice means heavily frequented common areas, including the on-site manager's office or unit, all multi-unit mailboxes, all laundry rooms and community roomsCal. Code Regs., tit. 16, s. 1970.41
- A registered company that applies any pesticide in, around or to a structure gives anyone who asks, within 24 hours, the common, generic or chemical name of each pesticide applied, for requests made within three years of the applicationCal. Code Regs., tit. 16, s. 1970.42 (c)
- Any death or serious injury relating to a fumigation or pesticide application must be reported by telephone, immediately, to both the Structural Pest Control Board and the County Agricultural Commissioner where it happenedCal. Code Regs., tit. 16, s. 1970.43
The post-application notice
Whenever a licensee of a Branch 2 or Branch 3 company applies or uses a pesticide, a written notice is provided immediately after the service visit. A door hanger, invoice, billing statement or similar document qualifies if it includes the common, generic or chemical name of each pesticide applied, the date of service, and the registered company's name, address and telephone number.
For exterior work, and for the interior of commercial, industrial or single-unit homes, give it in writing in person or by first-class mail, or by email if the customer agreed to email in writing. For the interior of a unit in a multi-unit residential building, leave it on the unit's door or inside next to the door.
The notice before treatment
Section 8538 requires a clear written notice to the owner or agent and the tenant before the work: the pest to be controlled, the pesticides proposed and their active ingredients, the statutory statement that begins "State law requires that you be given the following information", with its caution that pesticides are toxic chemicals and the telephone numbers it calls for, and how often treatments happen under a periodic contract. Branch 1 gives it at least 48 hours before application; Branch 2 and 3 no later than before application.
It can be mailed or emailed, posted in a conspicuous place, or handed over; commercial and industrial buildings also get a posted notice unless the owner objects. For exterior work at multi-unit properties, conspicuous places include the manager's office, all mailboxes, laundry rooms and community rooms. Under a periodic contract it is needed only at the first treatment, and again whenever the pesticide changes.
Requests, records and incidents
Anyone who asks must be given the common, generic or chemical name of each pesticide applied within 24 hours, for requests made within three years of the application. Any death or serious injury relating to a fumigation or pesticide application is reported by telephone, immediately, to both the Structural Pest Control Board and the County Agricultural Commissioner.
From field notes to a California service report
Note each product and its active ingredient, where it went, and how you left the notice. ReportDraft lists every pesticide by name in the products table, prints your registered company's name, address and phone in the header with the service date, records how the notice was given, and reminds you about the pre-application notice.
Common mistakes
- Leaving without giving the post-application notice, or giving one that omits a pesticide.
- Leaving the company address or phone off the notice.
- Leaving an interior multi-unit notice anywhere but on or next to the unit's door.
- Emailing the notice without the customer's written agreement to email.
- Skipping the pre-application notice, or not giving a new one when the pesticide changes.
Sources
- Cal. Code Regs., tit. 16, s. 1970.42 (a), (b) (operative January 1, 2025), checked October 11, 2026
- Cal. Code Regs., tit. 16, s. 1970.42 (a) (1) to (3), checked October 11, 2026
- Cal. Bus. & Prof. Code s. 8538 (a), (b), checked October 11, 2026
- Cal. Bus. & Prof. Code s. 8538 (b), checked October 11, 2026
- Cal. Code Regs., tit. 16, s. 1970.41, checked October 11, 2026
- Cal. Code Regs., tit. 16, s. 1970.42 (c), checked October 11, 2026
- Cal. Code Regs., tit. 16, s. 1970.43, checked October 11, 2026
Last reviewed October 11, 2026. Next review due January 11, 2027. This page explains published rules to help you write your report. It is not legal advice; the official text linked above governs.