Cal. Food & Agr. Code § 12993
It is unlawful for any person to manufacture, deliver, or sell any pesticide or any substance or mixture of substances that is represented to be a pesticide, or to retail any formula for a pesticide in conjunction with the sale or gift of materials that are represented to be the essential ingredients necessary to constitute a pesticide, which is not registered pursuant to this chapter, or for which the registration has been suspended or canceled, except as provided in regulations adopted by the director or as provided in the notice or order of suspension or cancellation. This section, however, does not apply to any pesticide product of a registrant that is manufactured solely for export outside this state, and which is so exported.
Ca. Food and Agric. Code § 12993