Cicada killers abound
Cicada killer wasps are considered beneficial as they keep the cicada population down and should be tolerated if possible. They usually do not bother people even when provoked. There are no easy control solutions. Modify the habitat and make the area unattractive to burrowing.
In lawns thicken your stand of turf by overseeding in the fall. Reduce exposed soil in ornamental beds by planting groundcovers and applying mulch. In new beds pin down landscape fabric with landscape pins and cover with mulch.
For more information on Cicada Killer Wasps see our publication on Mining Bees and Ground Nesting Wasps http://extension.umd.edu/sites/default/files/_images/programs/hgic/Publications/HG104_Mining_Bees_an...