Lyka barks a lot, but only inside if the doorbell rings or someone knocks. But outside, she would bark 24/7, and it started driving not only me crazy, but the neighbors as well. The only thing I found to work is controversial, so you can do your own research to see if this is something you would want to do.
It’s called petzoom. It’s a little rectangular controller, with one button on it. You hit the button, and it emits a high pitched sound that you cannot hear, but the dogs can. Some people say it works because it is causing pain in the animal, but Lyka has never shown pain with it, she just gives me the GSD head tilt. It instantly stops her barking, and I can redirect her with something at that point. But once she’s into her barking, it’s the only thing that will get her to refocus on me.
They sell it on amazon, I think it’s around 15-20 bucks, so not expensive. I actually bought 3, went to my neighbors, and gave them each one. Just so they could quiet her if I was at work. Once I did that, she really cut back a ton on her barking, because it was a “correction” she would get for barking, without me home. I feel like it taught her that barking was not acceptable, whether I was home or not. I use it very rarely now, but I’m generally home and can give her a verbal correction now because we’ve setup the guidelines with the petzoom. I only have to use it now if workers or landscapers go in our backyard, because they are invading her territory. I hit the button once to break her concentration on the backyard, call her to me, and she normally just lays at my feet until they are gone.