CCleaner for Mac used to remember my password to Clean Clutter once I entered it the first time I cleaned up clutter. It never would ask me for that again after than when I would select to Clean Clutter.
Sadly, the new version of CCleaner for Mac prompts me for my password every time I run Clean Clutter. I liked the old design better and wish you would put that old design back into your new code. That was a lot more user friendly and productive. I hope you will consider doing this.