| Yellow jackets or the big hornets. Be extremely observant and proceed with extreme caution. |
Naw. Not that. |
I was thinking that but OP says the entry is from the side. Also, she would have described the mechanical regularity of the holes. |
Way to miss the joke white toast. |
| Stick the water hose in the hole and turn on the water. Maybe a wet chipmunk will stick his head up. |
1/2 inch holes, would be a tiny chipmunk. Be cute though. |
|
Likely cicadas or solitary ground bees.
https://thebeeconservancy.org/ground-nesting-bees/ |
| These are from bees. They make holes and then stuff insects down them. They are harmless. |
Clean holes are exit holes of cicadas or june bugs. Not bees. |