Sometimes, after I uninstall a software, the folder of the program still exists in C:\Program Files, and there are always some leftover files in it. Besides, the software also left some of its files in C:\Program Files\Common Files folder. So there are a lot of junk left on my system even though I have uninstalled the software. Is it possible for CCleaner to achieve a total, complete and clean uninstallation for a software?