How to comletely remove all tracking cookies, and keep only Firefox's configuration setting?

I find it very difficult to manually deleting stored cookies from the system, without resetting the user settings in Firefox. And I am not even sure whether I delete all unnecessarily cookies from all folders.

I am thinking of finding a way to write a script or creating a cron job to automatically delete stored cookies, but I don't know what cookies from which folders should I work with without loosing the cookies that are in charge for the Firefox's user settings.

I see two folders where cookies are saved, in .cache/mozilla and in .mozilla.

Normally I block all cookies in Firefox and allowing only certain websites to place and read cookies.