Celery has no protective skin, which makes it almost impossible to wash off the chemicals that are used on conventional crops. There are 64 pesticide residues found by the USDA Pesticide Data Program, some of which are found 100% of the time. Strawberries are the most heavily treated crop in the U.S. covered with an average of 300 pounds of chemicals per acre. Apples have up to 42 chemicals, close to 50% being neuro-toxins. Bell Peppers have more than 49 different pesticides on them. Blueberries, Potatoes, and Spinach stepped in to take their place as produce that contributes to 90% of our chemical load. In addition, fungicides and chemical ripening agents are also found on them. Anything sprayed on a peach, with their soft, fuzzy, and very porous skin, is going to be there when you eat it, no matter how well you wash it. Peaches are the worst of all fruits as far as pesticide go containing 62 pesticide residues. Spinach has on it some of the most powerful toxins available. Do I need to go on? PDF version click here.