It just takes a long time....but I ran two simple tests...uninstall of an app installed prior to Soft Organizer installation and an uninstall of an app installed after SO installation with tracing....both instances it cleaned out folders, files and registry entries a normal uninstall left behind (yes, it took a long time because I used an image which I had to restore several times to make a true assessment of the effectiveness of this software....). I would say it is useful and necessary application. A definite must-have.