Yeah, as others have mentioned, you gotta keep these things away from the babies. They're harmless with full grown plants.
I remember years ago frequenting a...well-known...gardening forum where folks SWORE they didn't eat live matter and to leave them alone.
They WERE WRONG. I try and hammer down on them as best as possible before my plant out in March. Otherwise, there is little existing vegetation (rotting or no) outside, and they get a feast if I don't try and keep them under control.