Why not using an ultrasonic bark control device? I started using a bark control collar with one of my dogs, after a neighbour complained when my dog barked too

Why not using an ultrasonic bark control device? I started using a bark control collar with one of my dogs, after a neighbour complained when my dog barked too much one afternoon when it was left alone at home. So, now, as soon as it's on, she never barks (as she learned how it works), which is helpful when I need to go several hours leaving her alone. Never had another complaint. I haven't tried the ultrasonic ones, as the other dog never barks, so I thought it would have been unfair to have both "punished" because of one. But I guess in your case it would have been really useful.