Media Release | San Gabriel Valley Mosquito & Vector Control
September 2025
This Short Bites Monthly e-blast shares insight into the past month’s activity. This ensures that our data as a public health agency remains transparent to the public and to people who are interested in our mission.
In Your Community
We continue to provide the highest level of protection from vectors and vector-borne diseases to reduce outbreaks of human diseases in San Gabriel Valley.
District Communication
Fall Is Here, But the Bugs Didn’t Get the Memo
Even with cooler weather arriving, mosquitoes and black flies are still a concern. Our communities are currently seeing a high number of black flies, which are a nuisance but don’t transmit disease in LA County. Mosquitoes, however, can still carry dangerous viruses like West Nile virus and Dengue.
We are actively monitoring and treating public mosquito and black fly breeding sites.
You can help by:
- Tip & Toss Stagnant Water: Eliminate anything that can hold water to prevent mosquito breeding once a week.
- Managing Black Fly Sources: Temporarily turn off fountains or water features for 24 hours once a week to disrupt black fly breeding.
- Use Mosquito Repellent: Apply mosquito repellent whenever you’re outside to prevent bites. Need protection from mosquitoes & black flies? Make sure that your repellent contains the active DEET ingredient.
Your Community Investment at Work
As a friendly reminder, our services are already covered by your property taxes, so there is no additional cost to you. Your investment directly supports our mission to protect public health. We offer a variety of free services to help our community, including:
- Property consultation and water source checks
- Free mosquito fish for fountains and ponds
- In-school educational programs and community presentations
Together, we can continue to keep our neighborhoods safe and healthy.
Outreach In Your Community
Mosquito Activity In Your Community
In Disease Control
We continue to maintain essential vector surveillance including mosquito traps for disease testing, providing weekly data to the District, and maintaining mosquito fish.
Eaton Area Response
We have just completed our second round of proactive mosquito control treatments as part of our ongoing response in the Eaton area.
Our crews are actively targeting high-risk mosquito breeding sites, including both full and empty pools that were impacted by the recent wildfires. These treatments are essential to prevent mosquitoes from multiplying by the millions, which significantly reduces the risk of mosquito-borne diseases in the community.
In Education
We continue to provide excellent science education services and reduce mosquitoes in homes and schools within the San Gabriel Valley.
EcoHealth Vector Education
Ready to spark some curiosity and empower your students with champion-level habits?
Our Little Champions Preschool program makes learning about science and bite-free living an absolute blast, all while getting them ready for kindergarten. Spots are filling up fast! Don’t miss out. Secure your program before the year is over!
District Resources to Share
Don’t Fall for the Mosquito Trick
Find out why mosquitoes thrive in your community.
Foothill Residents, Are Black Flies Biting you?
Learn more about black flies and how to protect yourself from them.
Mosquito Control Innovation:
SGV Mosquito Match
Learn About Our New Mosquito Control Program Using Sterile Insect Technique!
