You can change its settings extensively, which you might want to do if you want to keep some information, add more items to be cleaned, or make many other changes. You can still use it as a normal or restricted user, but OS X may prevent you from deleting certain files.ĬCleaner for Mac will run well using its default options. Note: You should be logged into an administrator account to use CCleaner. CCleaner can clean unneeded files and settings for Web browsers and many installed applications on your system, as well as OS X features.