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Western Yellowjacket Identification and Control in Utah
Correct identification is an important first step in pest control.
VESPULA PENSYLVANICA
The western Yellowjacket is 3/8 to 5/8 of an inch long and are hairless. They are yellow and black in color with an abdomen that is blunt on the anterior side.
Western Yellowjackets are social insects who’s colony dies off every fall, but fertilized queens will overwinter. Queens start new colonies every spring that will grow throughout the summer months.
Their nests can be found in old rodent burrows, holes, structural voids, etc.
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Western yellowjackets are yellow and black in color.
Western yellowjackets are more blunt in their abdomen's anterior side.
Western yellowjackets are social insects.
Western yellowjackets are scavengers which means they will eat meat, sugar, human food, etc.
Why are they significant
Western yellowjackets pose a serious health risk to humans. Scavenging in the fall makes outdoor events dangerous.
Learn more by reading our blog post: Stinging Insect Guide: Bees, Hornets, & Wasps in Utah.
Name:
Vespula pensylvanica
Diet:
Insects, nectar; scavengers for meat, sugar, human food, etc.
Impact:
Serious health risk
Tips for keeping yellowjackets away
What To Do About Yellowjackets
Monitor for wasp nests from early summer through fall.
Purchase and use a bee veil, suit and gloves.
Minimize nesting habitat around property.
Install tight-fitting screens in windows.
Never plug an entrance hole to a nest!
How To Remove Nest
Use a wet-vac to vacuum yellowjackets, then dig up nest.
This technique can be dangerous if not done properly.
Research the proper technique and always wear protective gear.
Do not attempt while people are present.
Apply a non-repellant insecticidal dust in and immediately around entrance hole(s) at night.
Consider hiring a professional.
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First, we identify the root problem(s) with a site assessment. Pests are almost always an indicator of an environmental condition. This will determine the best actions to provide short and your long-term results against pests.
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Next, we develop a plan to fix the problems we discovered. This includes solving current pest issues, eliminating conducive conditions, and monitoring for future pest activity. Good pest management starts with a good plan.
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Lastly, we implement the solutions we developed including inspection, monitoring, and preventing future pest infestations. Good pest control requires a good offense and not just defense. Prevention is key.
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