Skip to main content

COVID-19 Updates: Get the latest public information related to coronavirus disease 2019 (COVID-19) at

Due to significant public health concerns from the COVID-19 coronavirus and the need to meet social distancing requirements, the Department of Agriculture/Weights and Measures' offices are currently operating under modified schedules. 

All three of our offices are staffed and have partially re-opened to serve our customers. However, customers are strongly encouraged to call ahead and make appointments for any necessary services. 

Please see the July 2020 Department of Agriculture / Weights and Measures Update for more information on current office hours, or contact us at the Department's main phone line or email.

Return to the top of the page

Pesticide Use Complaints

Who can use this service?

Anyone can use this service.

Is there a charge for this service?

This service is provided free of charge.

When and where is this service offered?

This service is available throughout the year during regular business hours except during scheduled holidays.

Location, directions and hours of operation

Click on location name to show hours of operation, directions and phone information

Arroyo Grande Office

Monday - Friday 8-4

810 West Branch Arroyo Grande, CA 93420

Tel: (805) 473-7090

Fax: (805) 473-7094

Templeton Office

Monday - Friday 8-4

350 North Main Street Templeton, CA 93465

Tel: (805) 434-5950

Fax: (805) 434-5953

San Luis Obispo Office

Monday - Friday 8-5

2156 Sierra Way San Luis Obispo , CA 93401

Tel: (805) 781-5910

Fax: (805) 781-1035

Frequently Asked Questions

Where can I complain about problems with a pest control or fumigation company?

You may contact the San Luis Obispo County Agricultural Commissioner/Weights & Measures Department at (805) 781-5910, the California Department of Pesticide Regulation (DPR) or the Structural Pest Board to complain about a pest control or fumigation company.  

Where can I go to see if a Pest Control Company is registered to do work in San Luis Obispo County?

Call the County of San Luis Obispo Agricultural Commissioner/Weights & Measures Department at (805) 781-5910 and ask for a pesticide inspector.  

Where do I complain about illegal pesticide spraying?

Contact the County of San Luis Obispo Agricultural Commissioner/Weights & Measures Department at (805) 781-5910, to complain about illegal pesticide spraying. When possible, it is always best to contact the Agricultural Department while the pesticide application is occurring and to be very specific about what, when and where you observed the pesticide application. If you are leaving a voice mail or e-mail message please include information on how we may contact you in the future. 

Where do I find out more information about specific pesticides?

Contact the manufacturer of the pesticide or chemical.
Check online sites. For example: or 
Contact the County of San Luis Obispo Department of Agriculture/Weights & Measures at (805) 781-5910.