Second-Generation Anticoagulant Rodenticides (SGARs)

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SGAR Reevaluation

On November 16, 2018, after investigating reported non-target wildlife exposure, the Department of Pesticide Regulation (DPR) issued a notice of proposed decision to begin reevaluation of pesticide products containing the second-generation anticoagulant rodenticide (SGAR) active ingredients brodifacoum, bromadiolone, difenacoum, and difethialone. DPR accepted comments on the proposed decision until January 16, 2019. On March 12, 2019, DPR issued a notice of its final decision to begin reevaluation of SGARs along with response and summary of the received 17,000 comments. The reevaluation is based on DPR’s investigations of reported non-target wildlife exposure to SGARs.

Related Legislation

On September 29, 2020, Governor Newsom signed Assembly Bill (AB) 1788 (Chapter 250, Statues of 2020) to prohibit uses of second-generation anticoagulant rodenticides (SGARs) due to their threat to mountain lions and other wildlife. AB 1788, which becomes effective January 1, 2021, prohibits the use of SGARs statewide until the DPR Director certifies the department’s completion of its reevaluation of SGARs and its development, in consultation with the California Department of Fish and Wildlife (CDFW), and implementation, of use restrictions necessary to protect wildlife.

In March 2019, DPR initiated the reevaluation of SGARs to address non-target wildlife exposure. Since initiating the reevaluation, DPR has reviewed scientific studies on links between SGAR use and non-target wildlife exposure, and will evaluate options for mitigating associated risks. The passage of AB 1788 emphasizes the importance of this work, and DPR is committed to a timely completion of the reevaluation.

Although AB 1788 generally prohibits use of SGARs, there are limited exemptions for specified activities, such as agriculture, and use in locations necessary for public health and safety. Federal and State laws and regulations applicable to allowed uses must continue to be followed. Guidance on permitted uses of SGARs under AB 1788 is available on the Enforcement Branch Web page titled New Second Generation Anticoagulant Rodenticide Prohibitions and Allowed Uses – Questions and Answers (ENF 2020-20).

AB 1788 does not change the registration status of SGAR products, requirements for SGAR registrants or the annual registration renewal of SGAR products. Per California Notice 2018-01, while SGARs are under reevaluation, DPR will not approve any labels that expand their use through label amendments or new registrations.

The text of the bill can be found at

For any questions regarding AB1788, please contact DPR’s Executive Office at (916) 445-4000.

Other Information

For content questions, contact:
Denise Alder
1001 I Street, P. O. Box 4015
Sacramento, CA 95812-4015
Phone: (916) 324-3522