The only thing I have found to really work is the citronella spray collar, and your neighbors should buy them for their dogs. You need to call the Police every time there is nuisance barking, make reports and press charges if it comes to that. A good place to buy these citronella spray collars is Pet Edge online, www.petedge.com.
Sometimes it helps a LOT if you can just talk to your neighbors about their dogs' barking. They are either not home when it happens or they tuned it out a long time ago. Give each a Pet Edge catalog or the web address (www.petedge.com). Try to be nice and explain that you don't want to report the dog barking which is really bothering you and are asking them nicely to do something about it. If that doesn't work, call the Police, Animal Control and everyone else.
Sometimes moving is the only solution. If you don't want to move, get some music you love to hear and play it to help drown out the bark-bark-barking. Stock up on good quality earplugs. Good luck with your inconsiderate bad pet owner neighbors.