Only food labeled organically grown is free of pesticides. Even then, certain low toxicity pesticides have been allowed since the federal gov't instituted national labeling rules. I only buy organically grown food to eat at home, though I'm not so rigid as to skip eating at restaurants. All non-organic farming is loaded with nasties, from the seed on down. The best you can do is buy direct from a farm you know and trust to be organic; the second best is to shop only where organic food is sold.