What's Eating my Beans???

Bush beans, growing in pots on the deck. ("Florence Green" and "Orca", even though varieties are not important, I think ...)
Something has been going to town on their leaves, chewing them right down to the stem 😠 The damage seems too severe and on less than tender tissue, so it does not seem like slugs to me ...
Any ideas? THANKS!!

Hi Niko,
looks to me like it could be ants. I had the same problem with young plants (of any vegetable kind) which were sitting on the ground on a deck, terrace or similar. There are many species of ants that cut young leaves and stems. Have a look around on your deck if you can see any traces of ants (dirt or gravel being thrown up between tiles is a sure sign of a hive building) .

Easiest sustainable way (not using chemicals) is get the plants to much higher ground, and harder to reach.

My vote would be either grasshoppers or deer.

Our garden is fenced against deer, but rabbits occasionally get in .... and that's the effect they would show on our beans.  As others have noted, if these are on a low deck, try moveing them to a higher point like a deck railing or table.  If the new location is away from deer and rabbits and *still* occurring, I would suspect squirrels or similar.

I'd guess deer or rabbits.  If there's anything left, maybe set up a trail cam to catch the perp in the act.