Tonight: Mosquito fogging in northeast Menlo Park

Parts of northeast Menlo Park, Redwood City and unincorporated county zones will be sprayed tonight for mosquitoes (Sept. 2) to curb the spread of the West Nile virus, according to the San Mateo County Mosquito and Vector Control District.

Mosquitoes carrying the virus were detected within the 94063 zip code on Aug. 28, and a bird tested positive on Aug. 27, district officials said. The area to be treated with insecticide tonight is roughly bordered by U.S. 101, Kentfield Avenue and Jefferson Drive.

Trucks will start fogging at 9 p.m. on Tuesday night and finish by 5 a.m. tomorrow. The treatment may be repeated if the virus is found in mosquitoes collected after tonight's spraying, according to the district. The fogging will only take place when wind speeds are below 10 miles per hour, according to district officials, to ensure that the chemicals remain within the targeted area. The district has been using Zenivex as the insecticide.

Mosquitoes transmit the virus through biting. Although the primary hosts are birds, it can also infect people, horses and other animals. Any standing pools of water should be drained to help prevent mosquitoes from proliferating, and people should use repellent and make sure door screens fit tightly, the district advised.

Contact the district at 344-8592 for more information or to request fogging in your area.

— Sandy Brundage


1 person likes this
Posted by Itchy
a resident of Menlo Park: Sharon Heights
on Sep 2, 2014 at 6:54 pm

Yay! Prevention is the best cure! Thank you for being on the job to protect our community! :-)

1 person likes this
Posted by Natural
a resident of Menlo Park: other
on Sep 2, 2014 at 7:34 pm

The odds of developing cancer from the chemicals used to spray for the mosquitoes is higher than the odds of contracting West Nile Disease.

1 person likes this
Posted by Jim Barton
a resident of Menlo Park: Allied Arts/Stanford Park
on Sep 2, 2014 at 7:38 pm

Do you have real data to back up that statement, or is it just a funny sound bite?

If you do, can you share a link?


1 person likes this
Posted by Natural
a resident of Menlo Park: other
on Sep 3, 2014 at 4:06 am

Years ago I read a number of actual studies on it but here is one recent site that I googled that is anti the spraying.

Web Link

you'll also find sites that mention the "unknown" impact:
Web Link
Do the pesticides used in mosquito control cause cancer?
"According to the National Pesticide Information Center, the common mosquito insecticide permethrin (the active ingredient being used in Dallas for ground spraying) was classified by the International Agency for Research on Cancer (IARC) as “not classifiable as to its carcinogenicity to humans” in 1991. This means that IARC could not decide whether or not permethrin can cause cancer. The U.S. EPA decided that permethrin was “likely to be carcinogenic to humans” if it was eaten.

And studies have also shown adverse effects (including death) for honey bees, beneficial insects...

1 person likes this
Posted by Enuff
a resident of Menlo Park: Downtown
on Sep 3, 2014 at 9:10 am

It's much worse than we thought.
See this link: Web Link
The chemical they used is a neurotoxin and is carcinogenic, and lingers for months. To quote the article linked above: "In 60 days there is still 25% left, in 90 days 12% is still present and even at 210 days there is still 3% present on the soil." And "The truth of the matter is that the chance you are going to die from the West Nile Virus is extremely unlikely. Your health is put at a much higher risk of harm from mosquito fogging than it is from West Nile Virus."
Besides which, few mosquitos carry the virus, and even if bitten, very few people develop any symptoms at all; in the entire state of California there were something like 4 fatalities last year, and most or all were frail elderly. As flu viruses go, this one is both mild and safe for most people. Invalids and the frail elderly may succumb to flu of any sort, pneumonia, etc.

It would seem the big scare over West Nile Virus has more to do with the pesticide company finding markets for its products....and the county's over-zealous Vector agency.

1 person likes this
Posted by MLK
a resident of Atherton: other
on Sep 3, 2014 at 3:37 pm

I called the district number listed in the article (344-8592) for information about mosquito control and how to get advance notification of spraying in my area. They directed me to sign up on SMC Alert. Their web address is:

Web Link

You will also find a map and schedule here: San Mateo County Mosquito and Vector Control District

Web Link

Of course they claim it's not necessary to cover your kids' play structure, or your dog's bowl, or even to close the windows, but for those of us who are skeptical, it's handy to know ahead of time.

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