Mud Daubers and the PG500

Hi,
Still waiting for my PG500 to ship, but I thought I would get prepared. I know when I say Mud, most think of Memphis Mud. Here in Central Texas we have mud daubers. They are a type of wasp. They make their nests out of mud. They love making their nests in protected areas.

So that I am not reinventing the wheel has anyone had success in keeping them out?
Maybe once i receive it it will be obvious.

Thanks in advance.