So much food comes to our markets with a coating of residue, so we really need to be careful. Even organic foods should be washed well. The quickest solution is to use one of the commercial washes available, following their directions.
When I buy greens, I always lightly salt the water and wash and rinse at least three times. Bugs hate saltwater, so this should flush them out. Another important step in cleaning produce is peeling the vegetables, because the largest amount of chemical residue can be found in the skin.
Fresh produce is wonderful for you, and you should always buy seasonal fruits and vegetables. Don't be afraid to go to your local farmer's market and explore—just be sure to wash your produce well and peel any vegetables. Follow these tips and eat seasonally, and I promise it will make a healthier you.