Yellowjacket
populations are high in the late summer months. Yellowjacket adults
feed on carbohydrates like those common in many outdoor picnics and
get togethers. As yellowjackets congregate around food or garbage
cans, they become a nuisance to many homeowners. Homeowners should NOT
swat, injure or crush a yellowjacket. Once a yellowjacket is injured
or killed, it releases a chemical that signals other yellowjackets
flying around to attack anything in their way.
These meat-eaters usually feast on caterpillars and flies early in
the year. During late summer, their appetites switch from the high
protein diets of insects to a carbohydrate diet as adults. Thus, these
adults are more obvious around trash bins and open soda cans. At this
time yellowjackets can attack with little provocation. Yellow jackets
do not overwinter so with cooler temperatures of fall, they begin to
become more lethargic. Thus, they should be left alone unless a nest
presents a hazard to a customer. If destroying a nest is desirable,
check with your local extension office for more information. Keep in
mind that the nest should be destroyed at night, preferably a cool
night, when the yellowjackets are sleeping. Destroying a nest during
daylight can be hazardous since the yellowjackets will leave their
nest and attack you! TechNotes
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