Reducing the population of adult mosquitoes with public health pesticides (adulticides) that are registered by the US Environmental Protection Agency (US EPA) will be done if necessary to prevent human illness or suppress a heavy nuisance infestation of mosquitoes. The decision to use mosquito control applications either by truck-mounted, backpack or aircraft application equipment will be based on surveillance information or the documentation of West Nile virus or other mosquito-borne disease activity at a level that indicates a threat to human health. Either Ultra-Low Volume (ULV) adulticide treatments or Wide Area Larvicide Spraying (WALS) treatments will be conducted in concentrated areas most at risk for disease occurrence or where travel-related mosquito-borne disease cases have been identified.  

Anaheim Treatment Application Dates and Times:
When: Wednesday – F​r​iday | September 16th, 17th and 18th
Time: Midnight to 5:00 a.m.
Treatment: Truck treatment with DeltaGard
If numbers persist or disease is present, treatments may continue throughout the biting season.

Application Area (shaded area indicates application area)

To see if you are in the application area, click on the magnifying glass in the navigation bar on the right of the map below, and then type your address in the search box:

Anaheim and Garden Grove Treatment Application Dates and Times: 
When: Wednesday – Friday | September 16th, 17th and 18th
Time: Midnight to 5:00 a.m.
Treatment: Truck treatment with AquaDuet
If numbers persist or disease is present, treatments may continue throughout the biting season.

Application Area (shaded area indicates application area)

To see if you are in the application area, click on the magnifying glass in the navigation bar on the right of the map below, and then type your address in the search box:

Costa Mesa Treatment Application Dates and Times:
When: Wednesday – Friday | September 16th, 17th and 18th
Time: Midnight to 5:00 a.m.
Treatment: Truck treatment with AquaDuet
If numbers persist or disease is present, treatments may continue throughout the biting season.

Application Area (shaded area indicates application area)

To see if you are in the application area, click on the magnifying glass in the navigation bar on the right of the map below, and then type your address in the search box:

Buena Park, Cypress and Los Alamitos Treatment Application Dates and Times:
When: Wednesday – Friday | September 16th, 17th and 18th
Time: Midnight to 5:30 a.m.
Treatment: Truck treatment with AquaDuet
If numbers persist or disease is present, treatments may continue throughout the biting season.

Application Area (shaded area indicates application area)

To see if you are in the application area, click on the magnifying glass in the navigation bar on the right of the map below, and then type your address in the search box:

Mission Viejo Treatment Application Dates and Times:
When: Thursday – Friday | September 10th and 11th
Time: Midnight to 5:30 a.m.
Treatment: Truck treatment with DeltaGard
If numbers persist or disease is present, treatments may continue throughout the biting season.

Application Area (shaded area indicates application area)

To see if you are in the application area, click on the magnifying glass in the navigation bar on the right of the map below, and then type your address in the search box:

Anaheim Treatment Application Dates and Times:
When: Wednesday – Friday | September 9th, 10th, and 11th
Time: Midnight to 5:30 a.m.
Treatment: Truck treatment with DeltaGard
If numbers persist or disease is present, treatments may continue throughout the biting season.

Application Area (shaded area indicates application area)

To see if you are in the application area, click on the magnifying glass in the navigation bar on the right of the map below, and then type your address in the search box:

Buena Park Treatment Application Dates and Times:
When: Wednesday – Friday | September 9th, 10th, and 11th
Time: Midnight to 5:30 a.m.
Treatment: Truck treatment with AquaDuet
If numbers persist or disease is present, treatments may continue throughout the biting season.

Application Area (shaded area indicates application area)

To see if you are in the application area, click the magnifying icon and type your address in the search box:

Fullerton Treatment Application Dates and Times:
When: Wednesday – Friday | September 9th, 10th, and 11th
Time: Midnight to 5:30 a.m.
Treatment: Truck treatment with AquaDuet
If numbers persist or disease is present, treatments may continue throughout the biting season.

Application Area (shaded area indicates application area)

To see if you are in the application area, click on the magnifying glass in the navigation bar on the right of the map below, and then type your address in the search box: