Don Y wrote in news:mu4240$839$1@dont-
email.me:

Here, holes that aren't caused by burrowing critters (always brings
the image of Bill Murray as groundskeeper to mind! : ) are
usually the result of decayed/decaying roots.


I doubt that's the case here. Only one tree in the yard, a rather small one
- 7" diameter trunk, cut down some 20 or more years ago. Its stump is far
from where the holes appear. So it's possible but not likely.

Any other trees have not left a stump and would have been removed well over
30 years ago, before I moved here.

Thanks for the idea though!


--
You know it's time to clean the refrigerator
when something closes the door from the inside.