Thursday: Fogging for Adult Mosquitoes Set for Holland Tract Marina

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Due to the high numbers of mosquitoes and the presence of West Nile virus in the area, the Contra Costa Mosquito & Vector Control District will be fogging by hand-held ultra low volume sprayers to control adult mosquitoes.
  • DATEThursday, September 22, 2016
  • TIME: Between 6:15 p.m. and 7:30 p.m., weather permitting.
  •  LOCATION:  Holland Tract Marina
    The area to be treated is bordered on the south and east by Holland Tract Road and on the north and west by agricultural land.
MATERIALS USED: The insecticide to be used is Zenivex E4, RTU applied at a rate of 1.5 ounces per acre by hand-held ultra-low volume sprayers.
MAP: (For an interactive map, please click here – available shortly after this notification is published)
The Contra Costa Mosquito & Vector Control District utilizes an integrated vector management program which means we use a variety of protocols for controlling mosquitoes. These protocols include public education, physical control such as managing vector habitat, biological control such as mosquitofish, and chemical control such as pesticides.
The majority of the District’s mosquito control is completed when mosquitoes are still in their aquatic form, in their water source. Once mosquitoes emerge from the water as adults, the only effective method to control them is by using pesticides. We use only those products registered with the Environmental Protection Agency for the use of mosquito control and protecting  public health. They are applied by our trained and certified technicians.