Once installed it scans your computer for items in temporary folders, browser cache and recent documents for instance. Almost thirty locations, each showing the number of files and the complete size of all those files. I think it´s interesting that the program lists all three browsers that I use (opera, firefox and ie) each with separate entries for disk cache, cookies, history and more.

Cleaning is easy as well. Mark the locations that you want cleaned and select clean afterwards. If a path is cleaned it will disappear from the disk cleaner listing and reappear again if new files are discovered. Nice little tool with great impact on security.