To clean your Mac's cookies for the first time, launch Cookie Stumbler and click on "Sources" in the tab bar. Cookie Stumbler will then analyze your cookies and will present you with an alphabetically ordered list of domains once the scan has completed.
Domains marked in red indicate that they store tracking cookies on your Mac. These are unchecked (meaning they're marked for deletion in the "Keep" column) by default, unless the domain belongs to your domain keeplist or is covered by a Smart Rule.

Once the scan has completed:
- Uncheck any further domains whose cookies you don't want to keep.
- Click on "Clean" to start the cleaning process.
Cookie Stumbler will clean your Mac and will present you with a refreshed list of domains once the cleaning operation has been completed. No domains marked in red will remain. Your Mac has now been cleaned of all tracking cookies.