Answer: The culprits could be squirrels, but it may also be chipmunks (which are technically ground squirrels), or mice. Chipmunks and mice live in holes in walls and the ground, and squirrels live in trees for the most part. It's impossible to eradicate these animals from an area, because there will always be more to take their place. To prevent digging, which I'm sure will continue, because they are such persistent visitors, place hardware cloth or chicken wire over the soil in your containers and windowboxes. They'll get frustrated when they come up against the barrier, and try elsewhere. Best of luck!
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