Category Archives: Vector Control

Is it My Imagination? Are Yellowjackets More Aggressive, This Year?

The Change in Seasons Does Have an Impact on Yellowjacket Behavior You’re in your backyard, doing a little weekend barbecuing and wham… out of nowhere yellowjackets are all around. You start waving your arms and some start stinging you. What’s … Continue reading

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Update on the District’s Mosquitofish Service

Since the Contra Costa Mosquito & Vector Control District office closed to the public due to the COVID-19 pandemic, residents seeking mosquitofish could not pick up fish in person. The District’s mosquitofish service changed to allow residents to request mosquitofish as they … Continue reading

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How to Reduce the Risk of West Nile virus by Reporting Dead Birds

During the current pandemic, there are daily reports on the new things scientists are learning about the virus (SARS-CoV-2) that causes COVID-19 disease because COVID-19 is so new. Here in Contra Costa County, there is already a virus that is neither new … Continue reading

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Young Skunks are Out and About

Each year, skunk activity peaks twice a year–in the winter during mating season and during the spring when young skunks are born and start to venture out into the world. Right now, those young skunks are exploring their surroundings and … Continue reading

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Its Bee Swarm Season

What to do if You See a Swarm It’s springtime and that means bees are on the move. According to the UC Davis Statewide Integrated Pest Management Program, warming temperatures prompt a queen and a group of worker bees to … Continue reading

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Swimming pools, Covid-19 and the risk of mosquito-borne disease

It’s Time to Dump and Drain After the Rain; Tick Service is Suspended For many homeowners with swimming pools on their properties, spring is the time of year to transition from winter’s lack of pool use to the clear blue … Continue reading

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Mosquito control is in our hands… and yours

The first thing county residents can do to protect public health is let us know what you are seeing by requesting service. The Contra Costa Mosquito & Vector Control District provides public health services to reduce the risk of harm or disease from mosquitoes, … Continue reading

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COVID-19 and the CONTRA COSTA MOSQUITO & VECTOR CONTROL DISTRICT

How the District Continues to Protect Public Health With this week’s order from the acting Contra Costa County Health Director that county residents are to shelter at their place of residence except to provide or receive certain essential services, many folks … Continue reading

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Its only February and the Yellowjackets are back

Act Now to Reduce the Risk of Yellowjackets They live right under our feet and when we least expect it, they bite and sting repeatedly. It’s only February 2020, but they are already back. So far this year, the Contra Costa … Continue reading

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Why Rats and Mice seek shelter indoors – 3 Tips to Prevent Rats and Mice from Warming Up Inside Your Home

As the weather turns colder and the rain returns, do you ever notice how much faster you move to get indoors? We’re anxious to get inside because it’s warm and dry there. That point is not lost on rats and … Continue reading

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First sign of West Nile Virus activity of the year in Contra Costa County

The Contra Costa Mosquito & Vector Control District is reporting one chicken from the District’s sentinel chicken flock on Holland Tract, near Knightsen has tested positive for antibodies against West Nile virus. This is the first sign of West Nile … Continue reading

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What to do if You are Face-to-Face with Ground-nesting Yellowjackets in Your Yard

“I was minding my own business, mowing my lawn when all of a sudden, I’m being attacked by yellowjackets.” Does this sound familiar? Contra Costa County residents often share stories like this when a Contra Costa Mosquito & Vector Control … Continue reading

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Be A West Nile Watcher

Reduce the Risk of West Nile Virus–Be on the Lookout for Mosquitoes and Dead Birds   First come the hot days of summer, then the warm summer nights soon follow–and those warm nights actually increase the risk of West Nile virus … Continue reading

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What to do to avoid painful yellow jacket stings

Put traps up now Yellowjackets can sting and bite repeatedly. Yellowjackets stings and bites are painful and can be dangerous for people who are allergic. And more than one yellowjacket has been known to ruin a backyard barbecue. What can you … Continue reading

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SMELL THAT SMELL?

10 Tips to Reduce the Risk of Rabies During Skunk Mating Season For skunks, it’s the smell of love as male skunks seek females during mating season. For the rest of us, it’s the unmistakable scent of skunk spray – … Continue reading

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Four Important Steps to Take Now to Prevent Mosquitoes Later

This winter was so dry, scientists said California’s chance of having a “normal water year” was down to nearly 30 percent. Then we experienced Miracle March 2018, and even more rain has continued off and on. Now there are plenty … Continue reading

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The Time to Prevent Yellowjackets is Now

The weather warms; you fire up the grill, throw on the chicken, and plan to enjoy dinner on the patio. Within minutes, there’s one yellowjacket hovering around the grill, then, more and soon several yellowjackets force you to change plans … Continue reading

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