Good Software for keeping your HDD Clean >>

Can you recommend some good software for cleaning up your iMACS / Macbooks hard drive or any tips from anyone for doing this without any software IE. What you can delete and what you cant delete, Thanks guy.

Not sure what you mean by keeping it clean? Macs are not like a Windows computer that get stuffed full of Malware (unless you install it). Onyx is a good program to clean up the logs or you cuold reboot once a month to flush the logs as well. That being said, I have had my system running for about 6 months (no reboot) and all is fine.

So, what exactly are you trying to do?