The best two (2) cleaners for temp. Internet files, especially when it comes to malware is TFC and CCleaner.
CCleaner, freeware system optimization, privacy and cleaning tool. There is a Slim version available as well at http://www.piriform.com/ccleaner/builds – 4th option down. It removes unused files (cache, temporary Internet files, etc.) from your system, allowing Windows to run faster and freeing up valuable hard disk space. It also cleans traces of your online activities such as your Internet history. Additionally it contains a fully featured registry cleaner (make a back up in Documents when in doubt).
Download TFC by OldTimer to your desktop. http://www.geekstogo.com/forum/files/file/187-tfc-temp-file-cleaner-by-oldtimer/
· Please double-click TFC.exe to run it. (Note: If you are running on Vista, right-click on the file and choose Run As Administrator).
· It will close all programs when running, so make sure you have saved all your work before you begin.
· Click the Start button to begin the process. Depending on how often you clean temp files, execution time should be anywhere from a few seconds to a minute or two. Let it run uninterrupted to completion.
· Once it’s finished it should reboot your machine. If it does not, please manually reboot the machine yourself to ensure a complete clean.