[mudman]

I can't believe nobody has brought up air horns!

Every time the dog barks and your neighbors are home, blow the air horn. Don't stop until somebody comes out or the dog shuts up.

I would of course try talking to the owners first and use this only as a last resort.

them:"why the hell are you blowing that air horn?"

you:"why the hell is your dog barking?"

them:"thats what dogs do!"

you:"well this is what air horns do!"