Information on Fipronil
Find information on the registration status, continuous evaluation and mitigation measures in California to regulate this active ingredient. An active ingredient is the chemical that makes a pesticide work on a target pest.
Active Ingredient: Fipronil
Type of Pesticide: Insecticide, Insect Growth Regulator, Miticide
California Registration: Yes
EPA Registration: Yes
Fumigant: No
California Restricted Material: No
Toxic Air Contaminant (TAC): No
Volatile Organic Compound (VOC): No
Potential Groundwater Contaminant: No
Reevaluation Status: None
Chemical Class: Phenylpyrazole
DPR Chemical Code: 3995
Risk Evaluation and Mitigation Documents
- March 2023 - Fipronil Final Risk Characterization Document - English pdf
- January 2023 - Response to Comments by the US Environmental Protection Agency regarding DPR’s 2021 Fipronil Draft Risk Characterization Document - English pdf
- January 2023 - Response to Comments by the Office of Environmental Health Hazard Assessment on DPR’s 2021 Draft Risk Characterization Document for Fipronil - English pdf
- January 2023 - Response to the Fipronil Task Force Request for Reconsideration of Findings in DPR’s 2021 Fipronil Draft Risk Characterization Document - English pdf
- December 2022 - Assessment of Human Exposure to Fipronil - English pdf
- December 2022 - Response to Comments by the US Environmental Protection Agency on DPR’s Draft Human Exposure Assessment for Fipronil - English pdf
- December 2022 - Response to Comments by the Office of Environmental Health Hazard Assessment on DPR’s Draft Human Exposure Assessment for Fipronil - English pdf
- December 2022 - Response to the Fipronil Task Force Request for Reconsideration of Findings in DPR’s Draft Human Exposure Assessment for Fipronil - English pdf
- February 2017 - Problem Formulation Document Fipronil - English pdf
- August 2005 - ENF 2005-021 - Labeling Interpretation - Termidor® Sc Termiticide/Insecticide
Historic Documents
- March 2021 – Presentation on Fipronil Draft Risk Characterization Document
- January 2021 - Draft Risk Characterization Document
- August 2016 – Problem Formulation Summary
- August 2016 – Pesticide Registration and Evaluation Committee Meeting Agenda
- August 2016 – Pesticide Registration and Evaluation Committee Meeting Minutes
- August 2016 – Presentation on the Risk Assessment on Fipronil; DPR's New Process
- August 2016 – Problem Formulation Summary of the Fipronil Risk Assessment
- November 2001 – Initiation of Risk Assessment
- December 1999 – Significance of Dermal Dose Levels in Dermal Absorption Studies of Pesticides
- May 1999 – Dermal Absorption of Cyromazine, Diclofop-Methyl, Fenpropathrin, Fipronil, and MB 46513 in Rats
- March 1999 – Dermal Absorption of 14C-Fipronil Regent 80 WDG in Male Rats (HWI 6224-210)
- March 1999 – Dermal Absorption of 14C-MB 46513 in Male Rats (CHW 6224-230)