“The Clean Fifteen In addition, The Environmental Working Group also has a list called “The Clean Fifteen,” which includes produce that has tested as low in pesticides. They are: #1. Avocados #2. Sweet corn (but remember, this is a GMO food, unless marked “certified organic”) #3. Pineapples #4. Cabbage #5. Frozen sweet peas #6. Onions #7. Asparagus #8. Mangoes # 9. Papayas (but these are GMO, unless marked “certified organic”) #10. Kiwis #11. Eggplant #12. Grapefruit #13. Cantaloupe #14. Cauliflower #15. Sweet potatoes”