Introducing a Captcha on a form on my website basically blocked bots 100% of the time. It’s arguably good enough from a practical standpoint.
If someone really wants to exploit my site, then they will find a way. You can only make it harder but never truly impossible if you don’t want to dispose of all convenience.
Going to concerts with earplugs is great.
Even if the music is loud I can always hear the people next to me and the music still sounds good.