'Dirty Dozen' list reveals foods with most, least pesticides Strawberries top list for sixth year Copyright Adobe and last updated 2021-03-17 08:08:28-04 Strawberries continue to lead the "Dirty Dozen," a list of fruits and veggies with the most amount of pesticides. A new report from the Environmental Working Group says the fruit topped the list of the sixth year in a row, followed by spinach, kale, collard greens, nectarines, apples and grapes. The group has also released a list of the cleanest fruits and vegetables, including avocados and sweet corn. In a 2020 study, researchers say an increase in pesticide exposure can cause IQ loss and intellectual disability in children.