Pesticide Safety Program


Agricultural Commissioner Sealer of Weights and Measures

Greg Clark, Agricultural Commissioner Sealer of Weights and Measures


Pesticide Safety Program 

Vineyard Pesticide Application The Agricultural Commissioner administered PUE program is responsible for ensuring the safe use of pesticides in all settings in the county. Through training and outreach, we strive to educate pesticide users of their legal responsibilities. Through inspections and investigations we ensure the safety of workers, the public and the environment.   

Pesticide Use Enforcement Programs 

CalAgPermits Information  
CalAgPermits is the State's web-based (online) pesticide permitting program. This free service is intended to simplify and streamline the existing permit and pesticide reporting process.  For more information about using CalAg Permits follow this Instructional link

Maintenance Gardeners
For information about state requirements for maintenance gardeners visit the DPR webpage in English and Spanish.  
Maintenance Gardener Handbook 

Continuing Education 

This information is  for QAL, QAC, PCA and PAC license and certificate holders. The Napa County Agricultural Commissioner’s Office does not endorse or offer any opinion as to the value of these services. DPR offers a list of classes available in the state. 


Pesticide Container Recycling   

Pesticide Use Near School Sites

School IPM  

Sulfur Dioxide Use in Wineries 


Pesticide Alternatives and Other Information

What is IPM?

Alternatives to pesticides

What you should know about pesticides

Guidance to Protect Habitat from Pesticide Contamination  

Free Sites:

 Western Farm Press 
 UC IPM Educational Program: Pesticide Resistance  

Paid Sites:
 American Institute of Pesticide Training
 P & L Marketing Inc.





For a comprehensive database of agricultural pesticides applied in Napa County visit the California Department of Pesticide Regulation Pesticide Use Reporting page. Select desired year to begin query; results are indexed by agricultural commodity or by chemical name.