Clean Up Files tool in the Purgers tool group of the Project Cleanup tool-set can help clean up various elements and types from many external files.
When the ribbon button is clicked, the tool will ask for what files to care about.
Next, it asks for what to be cleaned up from those files.
If some items are checked and the OK button is clicked, the tool will clean them up from those files one by one. A progress bar will show what is being done at each moment.
An information box will finally show up to report what have been done.