Open the Cleaning menu and choose Find Duplicate Folders to scan for duplicate folders based on attributes you select.

Use the checkboxes in the top part of the window to specify what criteria should be examined in determining if two folders are duplicates.

The list in the Find Duplicate Folders window can contain both folders and disks. The folders and disks in the list, as well as any folders contained within them, are examined in the scan. Items can be added to the list with the Add button or by dragging them into the list from the Finder. No item in the list can reside in any other item in the list, and this is enforced while adding items to the list. To remove selected items from the list, use the Remove button or the Delete key.

As an example, suppose a folder named “Reports” is in a folder named “Documents”. Reports and Documents cannot both be in the list at the same time. Trying to add both (by dragging them in) will result in only Documents appearing in the list. If Reports is in the list and Documents is added, Reports will be removed. If Documents is in the list and you attempt to add Reports, it will be ignored.