Yellowjacket wasps on the rise, says Placer Mosquito Control

The Placer Mosquito and Vector Control District reports an increase in calls concerning yellowjacket wasps, especially in the western end of Placer County.

Summertime is when yellowjackets are expanding their nests, making them more active and visible.

Yellowjackets are often confused with paper wasps and mud daubers.  These insects may look alike and are all capable of stinging, but the differences in yellowjacket behavior make these wasps much more of a threat to the public.
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