As mud daubers have been documented as remaining calm, preferring to move on and build a new nest, rather than attack their intruders, even when their nests are destroyed, they rarely sting humans or animals, except spiders. ... Mud dauber stings, however unlikely, can cause swelling and redness.

Does a mud dauber sting hurt?

Mud daubers' venom is mostly used to paralyze and preserve their prey. They're also not aggressive and they do not defend their nests as social wasps do. ... Like all wasps, the mud dauber can deliver multiple stings. The pain caused by the sting of most mud daubers is not considered especially painful.

What do you do if you get stung by a mud dauber?

Wash the sting area with soap and water to remove as much of the venom as possible. Apply a cold pack to the wound site to reduce swelling and pain. Keep the wound clean and dry to prevent infection. Cover with a bandage if desired.