You need to go one step further.  Douse it in gasoline and burn it.  Seriously.  Government computers with sensitive data are incinerated for reasons other than paranoia.  Of course, your local Crockett and Tubbs probably won't have the time or resources dig under the garbage written by Cyberscrub.

I had to laugh at that, ebba.  I took out two hard drives and set them in the driveway and drove over them and then hit them with a hammer!  Then I tore open the drive and folded and mashed the circuit board with pliers.  My computer guy laughed at me and told me that since the disc itself was still intact that the info was still available to a true geek if one wanted the challenge.  I threw it in the trash and said "go for it".

beachbound, who are you testing this product for?
I mean, your own business?  The government?  Just some general idea.  $149.95 is kinda high unless this darn thing is great.
Isn't there some kind of Consumer Reports for computer cleaners?
I would love to see some stats on this product vs. Cyberscrub vs. Norton's Clean Sweep just to see how they tested against each other.
Anyone know of a place to check this?

Not even an FDISK then Formatting completely destroys data on your hard drive.

Use something like V-Com Secure Erase (Part of Fix-It utilities), Norton's Clean Sweep, or any other product that overwrites the hard drive from bootstrap to the last sector with trash.

Then Fdisk the drive, reformat it, and do it again with another, different product with a different pattern. Once that is done place the drive on top of a very strong Magnet, preferably one from a linear accelerator to randomize the randomized binary bits you have just written again.

This may not be 100% bulletproof but it's right up there, and will seriously dissuade the local constabulary!

By the way, if you think you've done a good job at erasing your hard drive, get a copy of Spinrite from Steve Gibson Research (http://www.grc.com) and run it on your drive to see if you can recover any data. If it doesn't find any recoverable data, then you're way ahead of the curve.

HPG

Hyproglo has the best suggestions so far.  Having been involved in data retrieval in corporate cases there really is not much you can do except remove the hard drive, drive it to the ocean and toss it, hope no one finds it.  When data is written the disk heads will write 0 and 1's in a pattern, even the best drives have somewhat distorted patterns and can be recovered if even the slightest bit of "good" distortion can be read.  Writing the drive over with a good erase program atleast 7 times will usually remove the data.  Think of it like this...if I write the word "Food" on a peice of paper and overwrite the paper with "0"s one time, if it is good then one letter will be erased leaving something like "F od".  There are very good forensic data programs that will see this and recover the "o" and the puzzle is solved.  Don't fool yourself by thinking that formatting the drive or installing another OS on top of it will hide it.  All formatting does is remove the headers off the master boot record, if those headers can be recovered all that old data is readable.  The data needs to be over written with "0"s to make it non readable.  The trick is to over write it enough to hide all the data.

-R