drive cleaners

i have used eraser 5.7 and hard drive cleaner to clean the data

of my drive drive . can anyone tell me some more freeware programs

to erase data

 

there's one called NecroFile.
http://www.necrocosm.com/nfinfo.html

 

SysInternals makes a free one that runs from command line, which would be good for scheduled cleaning.
http://www.sysinternals.com/ntw2k/source/sdelete.shtml

And SnapFiles has a few free ones as well, at the bottom of the page there's a link to shareware ones.
http://www.snapfiles.com/freeware/security/fwerase.html