Category Archives: Vector Control

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 →

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 →

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 →

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 →

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 →

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 →

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 →

“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 →

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 →

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 →

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 →