CCleaner Questions

A wonderful program I wouldn't be without. That's CCleaner.

On the list of things that can be deleted every time the program is run, can you tell me if it's safe to add certain things to the standard list?

For example:

What is a DNS Cache?
Wipe free space?
Tray notifications cache?
User assist history?

Is it safe to tick those boxes?

 

Most of the answers can be found in http://docs.piriform.com/ccleaner, especially

• http://docs.piriform.com/ccleaner/ccleaner-rules/windows-tab/system-files
• http://docs.piriform.com/ccleaner/ccleaner-rules/windows-tab/advanced-windows-files
• http://docs.piriform.com/ccleaner/using-ccleaner/wiping-free-disk-space

And yes, it is pretty safe to check those boxes, although 'wiping free space' can take a long time, since it will overwrite (multiple times) all free space on your disk. Not something I have ever bothered with.

 

Briliant, pwillener. Thank you so much.

1,985 files removed; 467,440 KB.

I will run Wipe Space before I close down today.