PrivaZer can permanently wipe all traces using secure deletion methods and also reset you free disk sectors to zero to eliminate all traces from previous delete operations. The initial scan and cleaning process can be a little time consuming (20-30 mins), depending on the size of your disks and number of traces found. Other features include scheduled cleanings, support for removable drives and USB keys, automatic registry backups, deletion of USB history, and more.

You can review the results in the detail and choose to securely erase them from your disk. The program performs a very thorough scan that not only includes the common traces like registry, Internet history, cookies etc., but also looks for potential traces in your free disk space sectors. Read more.