There are several ad blockers that can block YouTube ads, but some may not work due to a recent update by Google that breaks ad-blocking browser extensions. Here are some ad blockers that are known to work:

• AdGuard: This ad blocker is best for personalized ad blocking and has customized settings, user experience, and ease of use.

• Ghostery: This browser extension blocks ads and trackers on any website, including YouTube. It is a good alternative if your current ad blocker is not working on YouTube.

• uBlock Origin: This ad blocker is known for its ability to block YouTube ads and other ads that pop up during regular internet browsing.

• Total Adblock: This is a paid ad blocker that can successfully block YouTube ads anywhere, on any browser or device.

It is important to note that YouTube is experimenting with its ad-blocking policy and may show some users an anti-ad blocking wall, forcing them to disable their ad blocker in order to view content. While ad blockers can minimize or remove ads on YouTube, they may not work all the time due to YouTubes efforts to bypass them.