I know there have been several posts about what folks use to remove bugs and other nasty stuff off their RVís.
Yesterday I discovered Mr. Clean MagicEraser. It did a great job of removing lots of bugs and other stuff that had been on the front of my 5th wheel. Some of that stuff had been there for 2+ years as I had never found an easy way to clean them off.
All clean now and no scratches. Plus, it is not difficult to do.