The dogs generally go out between 6-7am weekdays and 8-9am on the weekends. If they bark, I'm typically at the door with a flashlight and a shotgun at ready because that means someone is in our backyard. There's a large difference in barks, though, so I know when they're just barking at our neighbors dog if they're out at the same time - but he usually bitches at his dogs, so mine shut up when his get quiet.
Honestly, I'm not sure what you could do - they're under no obligation to keep their dog quiet unless it's excessive. You're probably exaggerating it and how often it happens, but you could do a little investigation into your city ordinances to determine quiet times and if dogs violate them as well as the time period.
Honestly, I'm not sure what you could do - they're under no obligation to keep their dog quiet unless it's excessive. You're probably exaggerating it and how often it happens, but you could do a little investigation into your city ordinances to determine quiet times and if dogs violate them as well as the time period.