This default option should not be unchecked. If the option is unchecked you will get false positives at the end of a Scrubit discovery process.

"Use Safelist" should only be used by computer technicians searching for badware that may have escaped discovery. This could happen by running as a name of a process in your safelist or by human error in accidentally putting the badware item in the safelist.

This option can only be unchecked for a single run; it will automatically go back to the default state (Use Safelist) on your next Scrubit run.