O.O.
J.,
Am I wrong or don't the dogs have to wear these collars for them to work? Just wondering how you plan to secretly get these collars on your neighbor's dogs!!?? LOL Dogs are usually barking becasue that's their job.
Personally, I am a dog owner, and if a neighbor bought a bark stop collar for ME to put on MY dog I would probably pitch it out! It delivers a shock to the dog and I wouldn't use O.. However, I am aware of my dog and do not let him bark at all hours or for prolonged periods of time. I would try again to talk to your neighbors. Seems like if they ignore your pleas, you will have little recourse but to report them.