Hi ; which testing site(s) do you use to verify the effectiveness of the Pi Hole?
State 1 : Testing via https://adblock-tester.com/ or https://d3ward.github.io/toolz/adblock.html ; multiple tests in Chrome (in Incognito mode) is showing 34 points / 4-10% blocked , Yahoo/CNN are showing ads
State 2 : I then installed PiHole on Ubuntu (239,401 Domains in AdList, upstream with Unbound ) as Primary. I also set up a Rasp Pi (119,404 Domains in AdList, using upstream Cloudflare ) as Secondary DNS , using the steps in https://www.crosstalksolutions.com/the-worlds-greatest-pi-hole-and-unbound-tutorial-2023/ (No Whitelist was applied to both Pi Holes)
(yes, Yahoo/CNN ads were blocked.)
After running 1 day or so, PiHole admins were showing between 15-40% of queries are blocked. (I guess it depends on the rest of where the family have been accessing)
When re-doing the tests : Chrome tests were variously reporting range of 52-74 points / 65-74% blocked