Sometimes I’ve found a site that gets partially blocked and causes a fuss. There’s an option to allowlist domain(s).

Also, some sites try to use ad domains to serve legit traffic, and some use legit domains to serve ads, so it’s not perfect, but it works pretty darn well overall.

PiHole is DNS based ad blocking and local DNS for everything on your network. So, even things that can’t run their own adblocker.