WPCommentCleaner is a very simple tool which can batch process SPAM, un-apporved and approved comments. I have developed WPCommentCleaner for personal use. Just thought it may come handy to someone else, hence I submitted this plugin to wordpress.org plugin repository.
To Download From WordPress Plugin Repository, Click HERE.
WPCommentCleaner Admin Page Screenshot:
Asks For Confirmation Before Executing Delete Command.