- 1). Spray the area with a wasp control pesticide to ensure the wasps stay away while your are removing the nests. These wasps are not typically aggressive and generally do not sting unless they are forced to defend their physical space. Since they are solitary, you may also consider killing lone wasps with a fly swatter.
- 2). Remove the brown nesting tube from the roof with a putty knife or other sharp, flat object. Scrape the knife and the tube to break it, but be gentle enough not to damage the roof or side of the house.
- 3). Use soapy water to remove the caked-on mud from the roof or siding. Wash away the residue with a hose.
- 4). Caulk cracks or screen in areas of the roof that may harbor spider nesting areas. Dirt dobbers prey on spiders, so limiting a spider's access to the nooks and crannies on a roof will limit the appearance of these wasps.
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