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In most situations it is best not to eliminate ground-nesting bees and wasps since they are valuable pollinators of agricultural and landscape plants. Many are useful predators that help control harmful pests. Though the social bumble bees will defend their nests, most of these bees and wasps...
We have ground wasps here, but they don't have excavated dirt piles next to the hole. The excavated dirt looks somewhat like the dirt found around ant mounds.
You should put your pinky finger in the hole and wiggle it around to see what happens.