Cutworms just saw off the stem where it meets the soil. You find the plant laying on it's side. Timberrrrr .... That's not what you're seeing. They don't eat leaves. I agree about slugs or snails. But you'd need a LOT of eggshells to deter them. They just crawl around them. Bait is the way to go and, but at least for me, is hardly a completely successful repellant.
