Glassy-winged Sharpshooter (GWSS) Treatment Information
What to Know
Pierce's Disease is caused by a xylem-restricted bacterium which is vectored by the Glassy-winged Sharpshooter.
The treatment for glassy-winged sharpshooters will be conducted by licensed Pest Control Operators under the supervision of your local county agricultural commissioner, or by trained and licensed personnel from the agricultural commissioner’s staff.
For more information about your local program, please visit the following websites:
Further information regarding the products used during GWSS treatments can be found below:
Health Questions and Answers – Merit® – English | Spanish
Health Questions and Answers – Tempo® – English | Spanish
Health Questions and Answers – CoreTect® – English | Spanish
Health Questions and Answers – Altus® – English | Spanish
GWSS/Pierce’s Disease Notice of Treatment & Proclamation of an Emergency Program
El Dorado
Proclamation of an Emergency Program (PEP) / Public Meetings
- PEP (GWSS): El Dorado Hills, January 10, 2025
- Map Only: El Dorado Hills, January 10, 2025
Fresno
Proclamation of an Emergency Program (PEP) / Public Meetings
- PEP (GWSS): West Fresno, February 20, 2025
- Map Only: West Fresno, February 20, 2025
- PEP (GWSS): East Fresno, February 20, 2025
- Map Only: East Fresno, February 20, 2025
Madera
Proclamation of an Emergency Program (PEP) / Public Meetings
- PEP (GWSS): Madera Ranchos, February 2, 2023
- Map Only: Madera Ranchos, February 2, 2023
Solano
Proclamation of an Emergency Program (PEP) / Public Meetings
- PEP (GWSS): Vacaville, November 15, 2023
- Map Only: Vacaville, November 15, 2023
Stanislaus
Proclamation of an Emergency Program (PEP) / Public Meetings
- PEP (GWSS): Turlock, October 08, 2024
- Map Only: Turlock, October 08, 2024