CCleaner Drive Wiper doesnot work properly

Hi Piriform Team,

I have used CCleaner Tool for cleaning my Windows PC.I have used Drive Wiper functionality of this tool to remove all files from disk free space. I have selected free space only wipe ,7 pass Security and drive for the Wipe process. After that I have used Recuva tool to check remaining files from the disk but it does not remove all the files from the disk.

Should I follow another steps?

Can you please tell me proper steps to clean up all files from the disk free space?

Best Regards,

Tushar

What files are left? Name, size, directory, and date created/deleted. Recuva normal or deep scan?