Get into gardening! THE DIRTY DOZEN vs THE CLEAN FIFTEEN The dirty dozen are the twelve fruits and vegetables most likely to be bought with pesticides and poisons still on them from large scale farming. The clean fifteen are the opposite, they are the cleanest and least likely to have pesticides and chemicals applied to them. If you are ever worried about cleaning pesticides off of food you are preparing, there's a simple trick to fix it. Make a 3:1 mixture of water and distilled white vinegar