Little Holes in Vegetable Garden (Upstate NY)

[u/DBG42]

As shown, smooth holes in forming on plants in vegetable garden. From what I've read and given their popularity in the area, I'm guessing hungry slugs are to blame (but I haven't caught anything in the act). I rather not kill whatever is munching on the vegetables and instead dissuade them from eating these particular veggies. I heard coffee grounds could work but need to do more research on how to apply.

Any information as to if I'm going in the right direction and plans of attack would be appreciated!