They move fast...pretty hard to spray, but I've used insecticidal soap on them in the past when I didn't have a 'trap crop' nearby(they must come into contact with the spray). In that case, nasturtiums work pretty well. They would be attracted to the nasties and I would take a plastic shopping bag and bag the whole plant with the beetles and dispose of it. I've heard radishes are also good to attract them and they grow fast. The flea beetles tend to cluster for a while and then move on after a week or so, or at least they did that in Wisconsin when I was gardening there...alas, I have no garden this year and just one measly Jalapeno plant in a container since we moved, but next year I hope to have a decent garden.

I noticed wasps hanging around the plant and one wasp was eating something on the plant. The wasps seem to like eating them...

A bit late to start a nasturtium unless I get a pre-grown one from a gardening center. As for radishes, they are easy and they grow fast - just from ones you buy at the grocers.