I am a tax auditor, and I am working with excel and I have two lists. One is a complete list of items, both taxable and non-taxable, the other is a list of just non-taxable. I highlighted the non-taxable sales and copied and pasted them under the main list, and I want to delete all the non-taxable items. Basically, the only duplicates in my list are non-taxable, and I need to delete ALL of them. What is the best way for me to do this?