Could be chipmunks too. Have you heard any singing, particularly Christmas songs?
We have chipmunks everywhere. Noticed one climbing our dogwood tree and eating, I think, the buds or flowers. They have also dug several small holes in and around the garage. Never saw so many!
Mice are also a possibility. That's who is eating the acorns in our garage. And in our car engine.
When you’re trying to figure out why the treadmill stopped working.....
I have to say - I've seen this issue in the past. I always thought it came from the roof somehow. We have a pretty tall stack of chairs and there was a pile of shells on top of those. Now, I'm convinced the squiirels were climbing up and eating them up there.
Shells everywhere- I assume it’s squirrels- just ha no idea where they’re getting in.