Hey Vada, I had to check this out so I did some digging. I just noticed a dirt dauber nest on the garbage can right inside my shed door. It seemed to appear overnight, and it may well have. Anyway, from what I've read, they seem to be unlikely to sting. I'd worry more about bees/wasps than these guys. Here's some of the stuff I found

here's one page I found

and I found this on another site:

<i>Wasps and bees can be classified as solitary or social depending on whether they live alone or in colonies. Solitary species such as cicada killers, carpenter bees, digger wasps and mud daubers use their stingers to subdue the insects and spiders upon which they prey. These insects are normally quite docile and rarely attack people. Social bees and wasps such as yellowjackets, paper wasps and honey bees use their stingers and venom as defensive weapons.</i>

and this

<i>Mud daubers sting only if pinned against the skin. They are beneficial except for their unsightly mud nests, which often are placed around human habitation. Undesirable nests should be knocked down and the residual soil washed off with water and a brush</i>

I hope that eases your mind a bit!

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