These black sheep of the Lady Beetle family are really destructive, so due diligence in using any chemical to control them is needed because what will adversly affect these buggers will also adversly affect any beneficial insects.
Planting some soybeans as a trap crop can help as can using floating row covers and encouraging parasites and predators to stick around and growing deterent plants, next year, but for this year juditious applications of Neem Oil or pyrethrin dusts or sprays may be what is necessary.

I'll look into getting some Neem Oil; I've heard pretty good thigs about it. Maybe Wal-Mart or the local nursery will carry it.

Abby

My beans usually get covered but they don't usually get really bad until just about the time we're through picking beans for the season. This year I've planted bush beans which are flowering now and pole beans which come later. I too would like to keep them under control. I usually end up pulling up the plants at the end of the season and burning them along with the larvae that ate all of the leaves. If I use a row cover how would the beans get pollinated? Iv'e only seen a few beetles so far and have hand picked them but like cucumber beetles they drop off the plant if you're not fast enough. I don't want to spray anything because I have 6 honey bee hives in the back yard. Do these beetles have any predators?