If you like to sell your PC or want to restore your hard drive, pen drive or camera card like a new one after a virus attack, you need to scrub all data from your drive.
A normal deleting of files or even formatting a drive will never be removed your file, photos, email, documents, credit card details or passwords from your computer. Any one with basic knowledge can recover them.
There are several software tools available for wiping out your data. Iolo Drive Scrubber is such a commercial tool that can Wipes out data from your Hard disk, flash drives, camera card and more.
Iolo Drive Scrubber normally costs $29.95 but you can get it absolutely free now by just visiting at this link.