Cal. FAC § 12406

(a) Each licensed pesticide broker, or person who is required to be licensed as a pesticide broker pursuant to Section 12400, shall maintain at its principal place of business the records of its purchases subject to mill assessments, sales, and distributions of pesticides into or within this state, including those of its branch locations, for four years. These records shall include copies of invoices showing payment of the mill assessment. The records shall be available for audit by the director.

(b) Each licensed pesticide broker, or person who is required to be licensed as a pesticide broker pursuant to Section 12400, shall report quarterly to the director the total dollars of sales and total pounds or gallons sold into or within this state of each pesticide sold and subject to Sections 12841 and 12841.1. The quarterly report shall be in the form prescribed by the director and shall include information from the broker’s licensed branch locations, if any, and any other information specified on the form or required by the director. The report shall include a certification, under penalty of perjury, that the information contained in the report is true and correct. The report shall accompany payment of assessments required by Sections 12841 and 12841.1.

(c) Pesticide retailers shall maintain records that show the names and contact information of their suppliers of pesticide in the current year. These records shall be available for audit by the director.