One of the most useful extensions I have ever installed.

I started with auto-deletion turned OFF for the first few weeks. During that time, I white-listed all the sites that I regularly visit. Then I turned auto-deletion on.

I have it configured so that I get a listing of deleted cookies whenever I close a tab. It's amazing how many there are that have a domain that's completely different from that of the actual web site. I assume they are tracking cookies and such. Nice to have them disappeared.

When I use my browser's (Firefox Quantum) cookie management page, there are so few cookies listed, and there are no longer any left that I want to delete.

Fantastic job!