After testing almost every known and less-known set of system cleaning utilities, through years, i found this one offering the best balance between erasing not needed files and keeping the system running without issues... It's recommended.
Ace Optimizer Utilities is one of the best system maintenance tools available in the software market. So all you have to do is, just to install it in your PC and to forget every problem related to your data, privacy, programs and junk files. Ace Optimizer Utilities will do the rest of work for you. Ace Optimizer Utilities can optimize your system for best performance in seconds.
I feel beta versions should specify BETA next to the program.