Notice of Closure of Reevaluation of Chemicals in the Nitroguanidine Insecticide Class of Neonicotinoid Pesticides

In February 2009, pursuant to Title 3 of the California Code of Regulations (3 CCR) section 6220, the Department of Pesticide Regulation (DPR) placed certain pesticide products containing the nitroguanidine-substituted neonicotinoid active ingredients imidacloprid, clothianidin, dinotefuran, and thiamethoxam into reevaluation (See California Notice 2009-02). Pursuant to Food and Agricultural ” Code (FAC) section 12838(a), DPR issued the “California Neonicotinoid Risk Determination” (Risk Determination) and “Addendum to the July 2018 California Neonicotinoid Risk Determination” (Addendum) identifying risks. In accordance with 3 CCR section 6224, DPR determined that additional restrictions on use were necessary to address those identified risks. As a result, DPR adopted 3 CCR sections 6990 through 6990.16 as control measures necessary to protect pollinator health (Neonicotinoid Pesticide Exposure Protection regulations) from food and feed use production agricultural applications of products containing the active ingredients clothianidin, dinotefuran, imidacloprid, and thiamethoxam, as identified in the Risk Determination and Addendum. On January 1, 2024, the Neonicotinoid Pesticide Exposure Protection regulations became effective. DPR accordingly notices this closure of the associated reevaluation.