Information on Imidacloprid
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: Imidacloprid
Type of Pesticide: Insecticide
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: Yes
Reevaluation Status: Active
Chemical Class: Neonicotinoid
DPR Chemical Code: 3849
Recent Reports and Announcements
- Imidacloprid: Subcommittee Findings and Recommendations May 17, 2022
- Summary of Imidacloprid Groundwater Detections in 2021
- Pesticide Contamination Prevention Act Hearing Procedures for Certain Products Containing the Active Ingredient: Imidacloprid
- Pesticide Contamination Prevention Act Proposed Hearing Procedures for Certain Products Containing the Active Ingredient: Imidacloprid
- An Economic and Pest Management Evaluation of the Insecticide Imidacloprid in California Agriculture
- Imidacloprid Registrants’ Report to the DPR in Response to DPR’s Letter Dated 23-Sept-2021; Notice of DPR’s Determination of Imidacloprid Detections in California Groundwater
- OEHHA's Findings on the Health Effects of Imidacloprid Relevant to its Identification as a Potential Groundwater Contaminant
- Request to Proceed with Pesticide Detection Response Process for Imidacloprid
- Errata to "Legal Agricultural Use Determination for Imidacloprid Detections in California"
- Legal Agricultural Use Determination for Imidacloprid Detections in California
- Director's Decision in Response to the Pesticide Registration and Evaluation Committee's Subcommittee Findings and Recommendations Regarding Imidacloprid in Groundwater
- Evidence Requested by the Subcommittee for Phase 2 of the Hearing on Imidacloprid Detections in Groundwater
- Findings and Recommendations by the Subcommittee of the Pesticide Registration and Evaluation Committee for the Pesticide Contamination Prevention Act Review Process for Imidacloprid
- Results for the Environmental Monitoring of Imidacloprid and β-Cyfluthrin in the Asian Citrus Psyllid Eradication Program
- Results for the Monitoring of Imidacloprid and Cyfluthrin Used in the Asian Citrus Psyllid Eradication Program in Los Angeles County (Study #258)
- Summary of Results for Fiscal Year 2003/04 Ground Water Protection List Monitoring for Imidacloprid and Three of Its Degradates
- GW 09: Ground Water Monitoring for Imidacloprid and Four Degradates in High Use Areas in California
- Study GW17/GW17A: Groundwater Protection List Monitoring for Imidacloprid
- Study GW17A: Protocol for Additional Groundwater Protection List Monitoring for Imidacloprid
- Study GW17: Protocol for Ground Water Protection List Monitoring for Imidacloprid
Risk Evaluation and Mitigation Documents
- April 2025 - List of Products Included in Reevaluation - English pdf
- April 2025 - Semiannual Report Summarizing the Reevaluation Status of Pesticide Products During the Period of July 1, 2024, Through December 31, 2024
- December 2024 - Notice of Completion of Final Risk Characterization Document and Final Exposure Assessment Document for the Non-Agricultural Uses of the Active Ingredient Imidacloprid
- October 2024 - Neonicotinoid Pesticides for Non-Agricultural Outdoor Use: New Law and Questions and Answers
- September 2024 - Notice of New Law Regarding Neonicotinoid Pesticides for Non-Agricultural Outdoor Use
- May 2024 - Pesticide Registration and Evaluation Committee Meeting Minutes - English pdf
- March 2024 - Notice of Initiation of Reevaluation of Neonicotinoid Products Intended for Non-Agricultural Use on Non-Production, Outdoor Ornamental Plants, Trees, or Turf
- March 2024 - Notice of Closure of Reevaluation of Chemicals in the Nitroguanidine Insecticide Class of Neonicotinoid Pesticides
- March 2024 - Notice of Initiation of Scientific Peer Review with Partner Agencies Following Completion of the Draft Risk Characterization Document and the Draft Exposure Assessment Document for the Non-Agricultural Uses of the Active Ingredient Imidacloprid
- January 2024 - Final Text of Regulations - English pdf
- April 2021 - Updated Risks from Human Exposure to Imidacloprid Residues in Well Water - English pdf
- April 2018 - Evaluation of the Potential Human Health Effects from Drinking Well Water Containing Imidacloprid - English pdf
- February 2017 - Summary of Japanese Beetle Eradication Program Monitoring for Carbaryl, Imidacloprid and Cyfluthrin in Sacramento County, 2015
- July 2015 - Summary of Japanese Beetle Eradication Program Monitoring for Carbaryl, Imidacloprid and Cyfluthrin in Sacramento County, 2011 (Study # JB 258)
- October 2012 - Results for the Monitoring of Imidacloprid and Cyfluthrin used in the Asian Citrus Psyllid Eradication Program in Imperial County (Study #258)
- October 2012 - Results for the Monitoring of Imidacloprid and Cyfluthrin Used in Asian Citrus Psyllid Eradication Program in San Diego County (Study #258)
- March 2012 - Monitoring Results of Imidacloprid Applications for Glassy Winged Sharpshooter Control in Residential Area of San Luis Obispo County
- February 2006 - Imidacloprid Risk Characterization Document (Dietary and Drinking Water Exposure) - English pdf
- September 2004 - Preliminary Monitoring Results of Imidacloprid and Cyfluthrin Applications for Glassy Winged Sharpshooter Control in a Residential Area of Solano County (Study 197)
- October 2002 - Preliminary Monitoring Results of Imidacloprid and Carbaryl Applications for Glassy-Winged Sharpshooter Control in Residential Areas of Imperial County
- July 2002 - Preliminary Monitoring Results of Imidacloprid Applications for Glassy-Winged Sharpshooter Control in Residential Areas of Santa Clara County (Study 197)
- May 2001 - Preliminary Monitoring Results of Imidacloprid Application for Glassy-Winged Sharpshooter Control in Residential Areas of Sacramento County (Study 197)
- September 2000 - Determination of Carbaryl and Imidacloprid on Dislodgeable Leaf Punch Samples - English pdf
Historic Documents
- December 2024 - Final Human Health Risk Characterization Document for Non-Agricultural Uses of Imidacloprid
- December 2024 - Final Human Exposure Assessment for Non-Agricultural Uses of Imidacloprid
- December 2024 - DPR Response to Comments by the U.S. Environmental Protection Agency
- December 2024 - DPR Response to Comments by the Office of Environmental Health Hazard Assessment
- December 2024 - DPR Response to Comments by Elanco US Inc.
- October 2024 - Semiannual Report Summarizing the Reevaluation Status of Pesticide Products During the Period of January 1, 2024, Through June 30, 2024
- May 2024 - Presentation on Risk & Exposure Assessment of Non-Agricultural Uses of Imidacloprid
- May 2024 - Presentation on Updates in Neonicotinoid Reevaluation
- March 2024 - Draft Human Health Risk Characterization Document for Non-Agricultural and Residential Uses of Imidacloprid
- March 2024 – Draft Human Exposure Assessment for Non-Agricultural and Residential Uses of Imidacloprid
- October 2023 - Bill Text, Pesticides: Neonicotinoids for Nonagricultural Use: Reevaluation: Control Measures
- January 2022 – Presentation on Updates on DPR’s Neonicotinoid Reevaluation and Upcoming Mitigation
- July 2020 – Presentation on DPR’s Neonicotinoid Reevaluation and Upcoming Mitigation Webinars
- September 2018 – Presentation on California Neonicotinoid Risk Determination
- September 2018 – Pesticide Registration and Evaluation Committee Meeting Agenda
- September 2018 – Pesticide Registration and Evaluation Committee Meeting Minutes
- September 2018 – Presentation on Neonicotinoid Risk Determination
- July 2017 – Pesticide Registration and Evaluation Committee Meeting Agenda
- July 2017 – Pesticide Registration and Evaluation Committee Meeting Minutes
- July 2017 – Presentation on Neonicotinoid Updates
- August 2016 – Study #307: Measurement of Airborne Drift of the Insecticide Imidacloprid as Applied by an Unmanned Aerial Vehicle
- March 2005 – Transferable Turf Residue following Imidacloprid Application
- March 2004 – Summary of Results for Fiscal Year 2003/04 Groundwater Protection List Monitoring for Imidacloprid and Three of its Degradates
- February 2004 – Monitoring of Ground Applicators Applying Pesticides and Arbor Trellised Vineyards or T-type Cross Arm Trellised Vineyards
- November 2001 – Initiation of Risk Assessment Process for the Active Ingredient Imidacloprid
- June 1993 – Risk Characterization Document (Section 18 Emergency Exemption for Use on Cotton)
- June 1993 – Confidor (Imidacloprid) Estimated Foliar Dislodgeable Residues