Friday, August 23, 2013

UPDATE: Ada County Completes Mosquito Aerial Spraying

Posted By on Fri, Aug 23, 2013 at 2:56 PM

UPDATE: 3 p.m. Aug. 23, 2013


Ada County officials announced August 23 that they had completed mosquito aerial spray applications, conducted in some neighborhoods of northwest Ada County to combat the increasing number of mosquitoes testing positive for West Nile Virus.

Flights departed from the Caldwell airport at 8:30 p.m. August 22, and the entire application process concluded in one evening, taking approximately three hours to cover approximately 24,000 acres.

County officials reiterated that Dibrom Concentrate was chosen because "it poses no risk to humans, pets livestock and crops when applied at the rate used, consisting of just one-half a fluid ounce peer acre."


UPDATE: 3 p.m. Aug. 22, 2013

The blue shaded area is scheduled for mosquito abatement spraying.
  • The blue shaded area is scheduled for mosquito abatement spraying.

Here's an update on aerial spraying, which will begin tonight in sections of Ada County, in an effort to combat mosquitoes potentially carrying the West Nile Virus.

Ada County officials say that planes will begin taking off Thursday evening at 8:30 p.m., pending weather and wind conditions that may delay or cancel the flights.

Quality assurance tests will be conducted before and after the application of the pesticide. Mosquito Abatement staff will be testing the spray zones prior to the application and then very late Thursday evening after the spray application. The application is expected to take place from 9 p.m. to midnight.

Once the spray application is complete, Mosquito Abatement staff will return to the area Friday, Aug. 23 to monitor the effect of the application.

UPDATE: 3 p.m. Aug. 21, 2013

Blue shaded area is targeted for aerial spraying.
  • Ada County
  • Blue shaded area is targeted for aerial spraying.

Ada County officials announced August 21 that an area covering approximately 24,000 acres will undergo aerial spraying, beginning as early as Thursday, Aug. 22, in order to combat mosquitoes carrying the West Nile Virus.

The aerial spaying which will take place between 9 p.m. and midnight will likely be over the course of one or two evenings and will encompass area of northwest Ada County, including much of Meridian, Star, and a portion of Eagle.

As of Aug. 21, 36 different testing pools at 26 locations around Ada County have produced mosquitoes carrying West Nile.

Ada County has contracted with the Blackfoot-based Vector Disease Control to conduct the aerial spray application. This is the same company that conducted aerial spray applications in Ada County in 2006.

The pesticide being used is Dibrom Concentrate and is regulated by the Environmental Protection Agency. Approximately 90 gallons will be used to cover the 24,00 acre spray/application area, meaning approximately one-half of an ounce should cover an acre. Registered no-spay zones within the county of 40 acres or greater will not be spayed during the application.

ORIGINAL POST: 9 a.m. Aug. 21, 2013

Ada County officials are ramping up their efforts to combat mosquitoes potentially carrying the West Nile Virus. Later today, Ada County Commissioners are expected to provide details of increased aerial spraying, "as a result of a high risk and probability of human infections of West Nile Virus in Ada County."

County health officials confirmed a significant number of mosquitoes being trapped that have tested positive for West Nile.

As of last week, 10 Idaho counties had reported mosquitoes testing positive for West Nile Virus, and three counties in southwest Idaho [Owyhee, Payette and Washington] had reported human infections of West Nile as well as a Malheur County in eastern Oregon.

"Aerial spaying is a routine and common mosquito treatment method in many parts of the country," said Brian Wilbur, Director of Ada County Weed, Pest and Mosquito Abatement. "Although we haven't seen any human cases in Ada County yet this year, we can't wait until people are getting sick or worse to take action."

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