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Mosquito & Vector Control

Mosquito The Mosquito and Vector Control Program protects public health by controlling mosquitoes and other vectors that spread disease.

Mosquitoes, ticks, and rodents are not only a nuisance, but are a major threat to public health. This Program control vectors and nuisance pests using effective and environmentally sensitive methods to control disease vectors and nuisance pests, and reduce the risk of vector-borne diseases such as West Nile virus and plague.

Click here to learn more about the Mosquito & Vector Control Program.

What is a Vector?

A vector is any insect or arthropod, rodent or other animal of public health significance capable of harboring or transmitting the causative agents of human disease (such as West Nile virus and malaria). Under certain circumstance insects, arthropods and other animals capable of causing direct human injury or discomfort, but not disease, are sometimes referred to as vectors.

Inspection Reports

Click here to access vector control inspection reports

Neglected Swimming Pools (Green Pools)

Please click here for more information about green pools.

West Nile Virus

Please click here for more information about West Nile Virus.

Please click here for a list of frequently asked questions about West Nile Virus.

Mosquito Fish

DEHS’s Mosquito and Vector Control Program (MVCP) is offering FREE mosquito fish to all County residents within MVCP’s jurisdiction. These mosquito fish are to be used on private property to reduce the potential for mosquito breeding. One request may be made per year for each household. A valid form of California identification, a utility bill or other official document indicating residence is required to verify jurisdictional residence. Click here to determine if you are within MVCP’s jurisdiction.

To receive mosquito fish, visit the MVCP office during regular business hours at 248 South Sierra Way, Unit E, San Bernardino, CA 92415 and complete a Mosquito Fish Request form. To print the Mosquito Fish Request form, click here.

NOTE: Distribution of mosquito fish is subject to availability.

To learn more about mosquito fish, click here.

What Vector Control District Am I In?

Please click here to find out what vector control district you are in.

Report a Dead Bird

Certain species of birds are very susceptible to West Nile virus and often die from it. Reporting dead birds and squirrels is a very helpful tool to our disease surveillance and monitoring efforts. The Mosquito and Vector Control Program and the California Department of Public Health use dead bird reports to help identify increased West Nile virus activity in an area.

If you see a bird that has been dead for less than 24 hours, please call 1-877-WNV-BIRD
(1-877-968-2473) or report it online here.

Mosquito & Vector Control Documents

Africanized Honey Bees Q & As


Bed Bugs



Fight the Bite with the 5 Ds



Garden Spiders

Hantavirus Illness and How to Avoid it

Is it a Mosquito?

Lyme Disease


Mosquito Fish

Non-Biting Midges

Pesticide Safety for Mosquito Control



Poisonous Bug Bites and Stings





Swimming Pool Safety

Violin Spiders

Virus del Oeste del Nilo

Virus Del Nilo Occidental

Wasps and Yellowjackets

West Nile Virus: Important Facts and Safety Tips

West Nile Virus Information for Seniors: What You Need to Know to Keep Yourself Safe

What is a Vector

What You Should Know about Mosquito Control Pesticides

Mosquito & Vector Control Annual Reports

2015 NPDES Notice of Intent

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