"If the number on the label begins with a 4, it is conventional produce. This produce has most likely been sprayed with pesticides. Genetically modified producewill start with the number 8, and it often is identified with a string of numbers consisting of 5 digits. Organic produce will be labeled with 5 digits also but will begin with the number 9. Always check the label twice, as it is sometimes hard to tell at first glance."