Close-up of a mud dauber wasp with a long, narrow waist, smooth dark metallic body, and long dangling legs beneath folded wings.

What Do Mud Daubers Look Like?

Mud daubers are solitary wasps known for building distinctive nests made of mud. Several species fall under the mud dauber name, including organ-pipe, black-and-yellow, and blue mud daubers. While their appearance can vary by species, most adults measure between ½ and 1 inch in length. They are typically black but may feature yellow, orange, or metallic blue markings. Mud daubers have long, slender bodies with a narrow, thread-like waist and clear to dark-tinted wings, giving them a sleek and easily recognizable profile.

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Where Do Mud Daubers Nest?

Mud daubers construct nests out of mud in sheltered areas, such as under eaves, porch ceilings, garages, sheds, or the exterior walls of buildings. Female mud daubers roll mud into small balls and transport it to the nesting site, where they craft chambers to hold their eggs. Many short mud tubes, usually about 1 inch long, are constructed side by side.

Different species of mud daubers build slightly different nests. Organ-pipe mud daubers build elaborate nests with multiple side-by-side mud tubes resembling organ pipes. Black and yellow mud daubers make a single mud tube nest. Blue mud daubers construct multiple mud tubes but are less elaborate than the organ-pipe mud dauber.

Do Mud Daubers Sting?

Yes, female mud daubers can sting if they feel threatened. However, they are generally not aggressive and rarely sting humans. Mud daubers use their stingers to paralyze and capture small bugs for their young, not for defense. Their venom is mild and not dangerous to humans, but a sting can be temporarily painful. Although mud daubers aren’t really dangerous, they can become a nuisance if they choose to build a nest on your house. They are actually beneficial as they help control spiders.
A umbrella-shaped wasp nest underneath a house overhang with multiple paper wasps on it.

Wasp Nest Removal in Milwaukee, WI

If you discover a mud dauber nest on your property, do not try to remove it yourself. Instead, contact the pest control experts at Advanced Wildlife and Pest Control for safe and effective wasp nest removal. Our wasp exterminators offer reliable, long-lasting solutions to eliminate mud daubers, hornets, and wasps from your home or business. Take advantage of our seasonal stinging pest treatments in spring and summer to keep your property pest-free all year round.