Caterpillars tend to have more of an attention span, they keep eating at the same spot. If its the beetles they will be most numerous in the hot sunshine, and they leave widespread damage like shown, and fast. They show up, mate, lay eggs in the ground, and then start eating your plants. The grubs are just as bad.
I had a bit of damage but catnip/beetle tea has slowed it down to a non-issue.
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Good eye, that does look exactly like caterpillar shit.
I didn’t even notice them until you said it. I went and looked and I do believe it is.What are the black things in the first pic? Poops?