West Covina, Calif. (October 9, 2025) — The San Gabriel Valley Mosquito and Vector Control District (SGV Mosquito) will be conducting residential mosquito control applications via truck in the communities of Monterey Park and West Puente Valley. The application is being conducted in an effort to reduce the number of mosquitoes in the area and the risk of mosquito-borne disease in the community. SGV Mosquito will use ultra-low volume adulticide and low volume larvicide applications to target mosquitoes at multiple stages to control the population and reduce the risk of mosquito-borne disease.

The treatments will be conducted Monday, October 13th and Tuesday, October 14th between 12AM – 5AM. The West Puente Valley treatment will take place in the area between West Fairgrove Avenue and West Francisquito Avenue, north of North Hacienda Blvd. and south of North Sunset Avenue. The Monterey Park treatment will occur in the area between West Floral Drive and the 60 Freeway, east of Vancouver Avenue and west of Collegian Avenue.

SGV Mosquito specialists will be applying Aquaduet which contains Sumithrin and Prallethrin, active ingredients formulated to mimic the properties in chrysanthemum flowers. Since the material is suspended in water, the application will not harm the finishes on cars or homes. Additionally, VectoBac WDG will be used, which contains Bacillus thuringiensis subsp. israelensis, a naturally occurring bacterium found in soils. If weather conditions are not favorable, or if there are operational delays, the application may be postponed or delayed. Postponed treatments will occur within the week.

MONTEREY PARK TREATMENT AREA

WEST PUENTE VALLEY TREATMENT AREA

Every effort will be made to notify residents in the treatment areas through physical postings, social media, Nextdoor, and news media. The public is also encouraged to visit the District’s website (www.SGVmosquito.org) for the latest information on mosquito activities.

Mosquito control is a shared responsibility and as mosquito activity increases, residents must take an active role in reducing the threat of mosquito-borne diseases to themselves and in their neighborhoods.

Follow the tips below to reduce mosquito populations on your property:

• Eliminate standing water in clogged rain gutters, rain barrels, discarded tires, buckets, watering troughs, or anything that holds water for more than a week.
• Ensure that swimming pools, spas, and ponds are properly maintained.
• Change the water in pet dishes, birdbaths, and other small containers weekly.
• Report neglected swimming pools in your neighborhood to your vector control district.

Follow the tips below to prevent mosquito bites:

• Apply mosquito repellent to exposed skin before going outdoors and reapply as recommended on the label.
• Wear insect repellent containing CDC and EPA approved active ingredients: DEET®, Picaridin, IR3535, or Oil of Lemon Eucalyptus.
• Wear light-colored, long-sleeved shirts and long pants.

For more information about the mosquito control treatments in Monterey Park and West Puente Valley, visit www.PublicHealthMosquito.org. Residents can contact SGV mosquito at 626-814-9466, online at SGVmosquito.org, or on social media: Facebook, X, and Instagram.

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Media Contact

Anais Medina Diaz, Director of Communications
amedinadiaz@SGVmosquito.org | 626-814-9466