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 Mosquito Treatments Planned for August 5th and 6th

Due to the detection of West Nile virus activity and elevated mosquito

abundance, the District will conduct an adult mosquito spray treatment on

August 5th., 2021, followed by a wide area larvicide application on August

6th., 2021. West Nile virus is transmitted to humans through an infected

adult mosquito bite. The spray application will be conducted between the

hours of 3:00 am to 6:00 am at the following location: the residential

neighborhood located in the City of Riverside, South of Magnolia Blvd. and

North of the 91 Freeway, situated between Van Buren Blvd. and Harrison St.

Please see attached images for exact spray route. 

The District will be treating this area with Aqua-Reslin (EPA Reg.

432-796) on August 5th., 2021 and Vectobac WDG (EPA Reg. 73049-56) on August

6th., 2021. Both control products are approved for use in mosquito control

by the US EPA.  We have been working hard to use Integrated Pest Management

Practices in these areas and the majority of our control efforts focus on

preventing mosquito breeding and killing mosquito larvae before they become

flying adults. However, due to West Nile virus activity and elevated

mosquito abundance detected, adult mosquito control followed by wide-area

larval control treatments via truck-mounted ground fogger will be employed

to control the current mosquito population in this area. Signs will be

posted on August 3rd., 2021 in the spray area to inform the public of our

activities.  Information regarding the treatment will be posted on our

website at If there are any questions or concerns,

please contact the District at 951-340-9792.


May contain: scenery, nature, outdoors, landscape, neighborhood, urban, building, aerial view, and road
May contain: landscape, nature, outdoors, scenery, aerial view, urban, building, and neighborhood