This is a option for deleting temporary internet files when you close down the Internet Explorer web browser.

To enable this option, open up Internet Explorer.
Then select the Tools tab, then Internet Options.
Then select the Advanced tab and scroll down to just about the bottom of the page.
You should see a line that says: Empty Temporary Internet Files folder when browser is closed.
Place a check in the box next to this option and then select Apply and OK.
This will delete all of the temporary internet files with the exception of legitimate cookies, from your computer each time you close down the Internet Explorer web browser.