Category Archives: Vector Control

Why are Yellowjackets More Active Right Now?

10 Tips on How to Respond to Today’s Yellowjackets and Prevent Tomorrow’s It’s a sunny late September afternoon and you head out to the patio to enjoy your lunch.But, no sooner have you taken your first bite, when a yellowjacket … Continue reading

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First Dead Bird of 2021 Tests Positive for West Nile Virus in Contra Costa Co.

The Contra Costa Mosquito & Vector Control District (District) reports the first dead bird of the year, and more mosquitoes have tested positive for West Nile virus (WNV) in Contra Costa County.The dead bird, a California scrub-jay, was picked up … Continue reading

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What’s the most effective Mosquito Repellent?

Make Sure the Repellent is EPA Registered According to the Centers for Disease and Prevention (CDC), repellents that are registered by the US Environmental Protection Agency (EPA) and contain one of the following active ingredients are safe and effective when … Continue reading

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PREVENTING MOSQUITOES AT HOME

It’s As Simple as Dumping out Water, If You Know Where to Look Mosquitoes need water to develop from egg to biting adult. To reduce the risk of mosquitoes at home, dump out any standing water on your property. While … Continue reading

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Report Dead Birds to Reduce Risk of West Nile Virus

August marks the dog days of summer with its long sunny days and warm nights. It’s the perfect time of year for an evening walk. As you walk around your neighborhood, the Contra Costa Mosquito & Vector Control District (District) … Continue reading

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Rain Followed by Sunny Days = Mosquitoes

Now’s the time to dump out rainwater to prevent mosquitoes later Last weekend, a Contra Costa County resident sent the District a picture of a mosquito that had landed on his leg. The resident was surprised mosquitoes were out already; … Continue reading

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‘TIS THE SEASON… FOR SKUNKS

8 Tips to Stop Skunks from Making Your Yard Their Home Skunks pose a risk to public health because they can transmit rabies. With mating season right around the corner, skunks will soon look for the home they will need … Continue reading

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5 Tips to Reduce the Risk of Rats and Mice in Your Home

Recent cooler temperatures can prompt some Contra Costa County residents to bundle up and head indoors. It turns out, rats and mice will try to get indoors, too. They are warm blooded and naturally drawn to warmth, so when it’s … Continue reading

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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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