Pi-hole

The classic way to clean up a whole household, smart TVs and connected gadgets included. Pi-hole runs as the DNS server for your network on a Raspberry Pi, an old PC, a virtual machine or a NAS, and blocks ads in places no browser extension can reach, such as mobile apps, TVs and IoT devices, with nothing installed on any of them. Its dashboard shows which devices are looking up which domains, which makes a chatty smart TV easy to spot. The cost is that you now run a small server, and if it goes down, so does name lookup for every device using it. DNS blocking also cannot remove ads served from the same domain as the video, so YouTube ads get through.