I will be doing a complete reformat of my computer and will have a new setup. Part of the reason is because of tons of junk on my pc. Not malware, just usless stuff I dont use or that were accidentally copied. Some of it is stuff that stayed from uninstalled programs. Are there other system cleaning tools that I should use in combination with CCleaner? Or am I just not using CCleaner properly?
In CCleaner you can define folder paths beyond the default ones that you want cleaned. It isn't going to be practical compared to doing a manual cleanup or clean install of the OS. You would have to define a bunch of folder paths.
There is no cleanup utility that will keep it squeaky clean and perky as a clean install of the OS. The best method to keep a limber system is to not install programs, don't orhpan them and forget to uninstall them, and check your system occasionally. A clean install now and then isn't a bad idea.
As others have pointed out, restoring a clean image is the most convenient method.