What can I do to keep bugs from eating my green beans in my garden?

Question

I do not know what is eating them up black marks. Do you know what type of bugs do this?/

Answer 1

Black marks?
Could be almost anything.
Here are some common bean baddies.
Bean leaf beetle:
http://www.vegedge.umn.edu/vegpest/BLB.htm
Mexican bean beetle:
http://www.uri.edu/ce/factsheets/sheets/mexbeanbeetle.html
Bean Aphid:
http://everest.ento.vt.edu/~idlab/vegpests/vegfs/beanaphid.html

Pests of beans and peas:
http://ipm.ncsu.edu/ag295/html/bean_pea_key.htm

Hope these help a little.