the tops of my green bean plants are being eaten up. This stopped them from producing. The rest of the plant is healthy.

Question

What can I do about it? There are still some small beans on plnts and a few flowers

Answer 1

Unfortunately, I don't think there will be any way to save this plant's crop, since most of the damage has been done. You will have to fence off the area, or keep animals out by any means necessary.

If you suspect that this is insect damage, than an insecticide will help. This article will help: https://www.gardeningknowhow.com/special/organic/natural-home-pesticides-organic-garden-pest-control.htm

This collection of articles will offer information on common animal pests, and how to deal with them: https://www.gardeningknowhow.com/category/plant-problems/pests/animals