Can anyone ID what these little holes are that are appearing in my garden? and do I need to worry about them? They are in the flower bed all along the front of the house, as you can see in the pics. I know I have some type of burrowing rodents in my yard, shrews I think, because one ended up in my post holes for my fence and I saw another one in this very garden. The rodents were the size of a small mouse. Thanks!