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Mason, Potter, & Mud Dauber Wasp Identification and Control in Utah


These wasps are 3/8 of and inch to 1+ inches long. They have various colorations: black and yellow; black; black with a bluish tinge.

They also have an elongated segment between the middle and rear body segments.

These wasps create mud nests on sides of structures or under windowsills, eaves, etc.

The nests can appear as clay pots, mud patches or mud tubes or pipes.

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Mason, Potter, & Mud Dauber wasp nests pose a slight health risk to humans. They are not aggressive. They may be considered beneficial since they prey on many species of spiders.

Learn more by reading our blog post: Stinging Insect Guide: Bees, Hornets, & Wasps in Utah.


Vespidae; Sphecidae


Insects, spiders, nectar


Slight health risk

Thorn Pest Services Tips for keeping wasps away

What To Do About Wasps
Pest control experts
  • 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.

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How To Remove Nest
Pest control experts
  • Wear protective bee veil, suit and gloves.

  • Early in the morning, remove the nest and place in garbage bag or scrape from side structure.

  • Clean nest area with soap and water or else wasps will build another nest in the same place.

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