Mudhills? What makes them
Ok I've read some of the forums and they all say that below a mudhill you should find a tunnel. I can't!
We have small mudpiles showing up in our grass overnight. About 1 per night. 4-5" in diameter. Go out with a small shovel, it's easy enough to scoop the dirt away, and the ground below seems relatively undisturbed, aside from the pile of dirt that's somehow been dug up.
Even took a large shovel, and dug out 1' around, and do not see tunnels leading off any way in particular.
They are showing up in close proximity to each other, about 2' or so apart, in a random fashion.
What is doing this??