For many years I have tried to impress on my clients and friends that it's wise stay away from non-organic strawberries. Pesticides have been detected in 99% of strawberries sampled and some had residues of 21 different pesticides. So in other words each non-organic strawberry is like eating a little pesticide bomb.
Each year the EWG (Environmental Working Group) posts a list of the “Dirty Dozen” the 12 worst (most pesticide laden) fruits/vegetables. This year, strawberries top the list. The list is as follows: Strawberries, spinach, nectarines, apples, peaches, pears, cherries, grapes, celery, tomatoes, sweet bell peppers, potatoes.
Please buy organic and please support your local farmers markets.