Flea beetle control?

[soeur]

Flea beetles attack my eggplants when young, overnight making the leaves look like someone blasted tiny buckshot through the foliage. I've sprayed pyrethrin, also pyola, also rotenone/pyrethrin to very little avail. I'd love to hear what you more experienced eggplanteers do to successfully combat these little buggers. They do a number on my melons, too.

TIA!