When your computer informs you don't have enough free disk space on your drive to install an application or copy a folder, one way to clear some space is by using an effective cleaning tool that removes temporary files, erases cache memory and hidden data areas.
A program I considered to be a smart solution to this matter was Windows & Internet Cleaner Pro. The best part about using this application was the fact that it didn't require much experience in handling its functions.
My only advice to you is to configure the program's settings before clicking the "Clean" button, because otherwise you might find yourself performing unnecessary tasks and waste plenty of time.
What I would've liked to see from this program and hopefully it's going to be a future improvement is a uninstaller tool to help me safely remove unused applications from my hard drive. Also, "All" and "None" buttons to select the options for each type of cleaning would be more than appreciated.
Thus Windows & Internet Cleaner Pro grants you access to numerous configurations, I still believe that the price it's a bit too high for the service it offers.