I am switching from CCleaner to nCleaner because Ive read that its a much more thorough program. I went through nCleaner and compared settings to that of my CCleaner install. After that I scanned with both items. nCleaner (614) found 614 invalid registry keys than CCleaner (0). I know I know. Everyone has their opinion on cleaning the registry and what not, but to be honest I dont care. Im not here for opinions on that subject. Here is the registry cleaning locations and such as listed by nCleaner: I have decided not to scan for invalid sounds, invalid help files, or invalid codecs so those locations have been removed from the above quote. Is it safe to delete these items? If only a few are safe which ones are? Im going through the TypeLib and Im recognizing alot of software that I trialed that I no longer have installed. Im recognizing file extensions that belong to programs I no longer have installed.