I have 3 harddisks, and checked all of them.
Never use the delete button, always Shift-delete, and habitually delete the folder Recycle bin when I see Windows created it yet again.
No Outlook express or such in use.
I also empty the tempfolder before defragging, as well as other folders I don't want to use anyway, like the IE cache folders.
I know what I'm doing, have been doing that and way more for years.
CCleaner is not a program I use. Most of what it can do I do manually, or leave as is as it's not in the way.