Is there a way to turn off the idiotic pop-up? I will probably be un-installing CCcleaner between uses if there is no way to shut it off.
Turn off all three monitoring items in settings
Also see here in the documentation on how to turn it off.
https://www.piriform.com/docs/ccleaner/ccleaner-settings/changing-monitoring-settings-ccleaner-free
and I've seen PC's where the monitoring options have been unchecked but a CC monitoring process still stays in MSCONFIG.
so it wouldn't hurt to double check it goes from there as well - which of course you can check from in CC, Tools, Startup.