Which directories does CCleaner clean?

Hi

I've just cleaned a lot of temporary files from my Windows 7 computer. But I can't make CC scan my backup as it would a local drive so I've securely deleted the C:/Windows directory backup and all appdata and program files. Is there any other directories CC cleans? I'd like to delete all temp directories and then rerun my backup to replace what CC left behind on my local drive.

Thanks!