When Will Spraying for Mosquitoes Start in Contra Costa County? This is the First Really Wet Winter Since the Drought.


Our district’s mosquito surveillance and control program is year round. Most of our mosquito control is completed when the mosquitoes are in their larval form (in the water) when they are more easily and efficiently controlled. However, once mosquitoes become flying, biting adults, fogging is the only method to successfully control them.

We evaluate and consider real-time data such as mosquito population, mosquito species (there are 23 species in Contra Costa County), disease presence, weather, the impact to residents, and much more in our decisions to treat mosquitoes in their various stages (larval to adult). When the data reveals there is a threat to our residents by adult mosquitoes in terms of disease or discomfort, we act as soon as operationally possible. We act quickly because adult mosquitoes can fly away and bite people. We announce our fogging plans to the public and the media as quick as we can operationally.

Since we only fog when criteria are met, we do not have a schedule. To sign up for fogging notifications, as well as our media releases and newsletters, visit our website. Anyone can opt in or out at any time and can choose which publications to receive. Fogging information, complete with maps and other information, can also be found on our website.

It’s true that the rain this year has changed the landscape. There certainly is much more water and thus, many more potential mosquito sources. But, we have considerable experience in our nearly 100-year history. Our budget is sound and we are well prepared.

Deborah Bass
Public Affairs Manager
Contra Costa Mosquito & Vector Control


About Kevin

Mayor - City of Oakley, Data Center Manager of Mainframe Operations and Optimization – USS-POSCO INDUSTRIES, Co-Founder and Board Member - Friends of Oakley A Community Foundation, Advisory Board – Opportunity Junction, Commissioner - Contra Costa Transportation Authority, Board Member - Tri Delta Transit and Transplan
This entry was posted in West Nile. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s