Conventional foods are also subjected to an enormous amount of these types’ chemicals as well as hormones, to make the fruit and veggies grow bigger. Apples are probably the worst offenders with pesticides showing on more than 98 per cent of all apples tested. Fruits with a 90 per cent positive rate of pesticide residue included oranges, strawberries, and grapes. Washing fruit does not remove 100 per cent of the residue. Your best chance for removing them is to keep them in water with vinegar and salt and let it stand for overnight.