12 Seems to be the magic number at the moment. You may know of The Dirty Dozen? This is a list compiled by The Environmental Working Group of the 12 foods that are best (for Americans) to eat organic if they can because they are heavily sprayed and have tested positive for at least 47 different chemicals, some for as many as 67. They are celery, peaches, strawberries, apples, blueberries, nectarines, peppers, spinach, cherries, potatoes, grapes, lettuce. On the flip side ther