The best way of reducing your exposure to potentially harmful pesticides is to eat organically grown food, where their use is avoided. Over 440 pesticides can be routinely used in non organic farming and residues are often present in non-organic food. Over 40% of all non-organic fruit, vegetables and bread tested in 2005 contained pesticides according to the Government's Pesticide Residues Committee.The results for particular fruit and vegetables were much worse, e.g. chemicals were found in all oranges tested, 90% of bread, 72% of grapes, 95% pears.