Category Archives: Vector Control

Yellowjackets are beneficial insects that eat garden pests and pollinate certain plants through daily foraging. If left undisturbed, yellowjackets are typically not a problem; however, these wasps will defend their nest if they sense a threat to the colony. Yellowjackets can … Continue reading →

The Contra Costa Mosquito & Vector Control District (District) reports the first dead bird of the year has tested positive for West Nile virus (WNV) in Contra Costa County. The dead bird, an American crow, was picked up in an … Continue reading →

As we all try to navigate what the new normal will be like now that the COVID-19 pandemic is entering the endemic phase, it turns out, we don’t have to look any further than another endemic virus that we’ve been … Continue reading →

Read This First, BEFORE Trying to Pick Up Fish at the District With spring right around the corner, the time is now to take steps to prevent mosquitoes. Dump out any standing water and if you’re a Contra Costa County … Continue reading →

Mice can spread bacteria and viruses in their droppings and nesting material. They’ve also been associated with asthma. Mice have difficulty maintaining body warmth, so they are attracted to the warmth, food and shelter that can be found in your … Continue reading →

9 Tips on What to do Now to Reduce the Risk of Rats and Mice in Fall and Winter Well, that was quick. One week it’s sunny and warm and now it’s cool and rainy. The change in seasons from … Continue reading →

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 →

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 →

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 →

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 →

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 →