We have the little ones but also some that get up to about 2.5 inches. If its like the SW the little ones sting worse than the big ones. I get about ten a year inside, live, dead, or trapped. Most are small but not all. They come right through slab to foundation joints in some cases.
I am told that to have zero since the subgrade wasn’t pre-treated we would have to treat to a level that we wouldn’t desire.
The builder said this would be an invitation to critters so the area was thoroughly bombed with insecticide. A pair of 4 inch pvc pipes carry rain water from the back hillside around the house, exiting on the other side of the front driveway.