If you have a boathouse with a roof on it – or any roofed structure near the lake – there’s a very good chance you’re providing the perfect habitat for Dirt Daubers.

These docile wasps need three things to make a perfect home: A source of mud (like the shore of a lake), protection from rain (the same as anyone who lives in a mud house) and spiders (which set up shop around any building that is lit up at night; and this condition seems to be multiplying more and more each year around Lake Martin).