My young foot-tall tomatoes and potatoes are under attack by black aphids. There are small holes in the leaves - some of them look like lace doilies. I sprinkled diazinon and sevin on the leaves, then remembered diazinon has been pulled from the market, something about killing birds I think. The black speck-like aphids have jumped ship for now, but soon they'll be back.
Aphids are the biggest bane of my garden. Soon they will be attacking the zucchini and squash. They always gather underneath their leaves later in summer. Green aphids attack the dill weed.
What products are safe and effective for aphids? Is there any way to nuke 'em once and for all or is it a matter of continual vigilance and spray/powder?