I have used ccleaner for a long time, but it does not appear to get Adobe Flash Cookies.
I found an article on the web about Adobe Flash saving cookies. I am not sure ANYONE except Adobe even knew they existed.
Read this 2007 article:
http://www.ghacks.net/2007/05/04/flash-cookies-explained/
Cookies management site:
http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager07.html
The only way to see them is by a web viewer on the Adobe Site (see the article) and when I looked I found tons of junk that was years and years old.
Try it yourself! My suggestion, You may want to add this as a new feature
Thanks for a great product.