There have been a slew of new technologies and methods for dealing with the annoying problem of peoples' dogs barking, and some of these are tested and tried by veterinary and dog-training professionals. One of these technologies is the anti-barking dog collar, which works on the principle of stopping the dog barking if his barking is continuous, prolonged, or too loud. In other words, the anti-barking dog collar stops your dog making excessive noise by activating a stimulus to stop him or her doing so. In some cases, this is a shock to the dog; in others, it is an unpleasant (to the dog) smell like citronella, which is undetectable by humans but is easily picked up by the dog's sensitive nose.

Doing a quick Google search reveals that shock-based dog collars are on their way out, and for good reason: they are not proven to work. Of course, all anti-barking technologies must be used hand-in-glove with various psychological methods and tricks, such as training the dog to stop barking after it has your attention, giving it love and playing with it if it has not been played with in a long while, and making sure that your dog is discouraged from excessive barking by a system of rewards and punishments. You may also prevent your dog from carrying on barking once it has started by distracting it during its bark – a whistle, clapping, or calling its name will usually achieve this goal, and further enforce this particular signal in your dog's mind.

Dog training collars are an iffy proposition unless you do your research. On their own, they are useless, for they must be used in conjunction with an approach that addresses the underlying need of the dog to bark. This in turn presupposes that you, as its owner, know something about the dog's psychology. Each dog has a unique personality, and all dogs express sadness, happiness, and fear, along with a host of other signals, through barking. If in doubt as to what your dog is barking about, talk to a pet specialist. Quiz these professionals about which technique to use, and while you do so, also ask them about the dog training collars on the market. Most of these collars are manufactured according to different standards of efficiency, safety and research.

Your local pet professional will tell you that most anti-barking dog collars are a waste of money, as they use vague terminology and tout advances in technology to baffle you into buying their product. Be careful. Do your research, and shop around. Most professional trainers, if they do invest in a training collar, avoid shock-based collars in preference to smell-based ones, such as collars that emit citronella, a harmless but smelly (to the dog) chemical compound that forces it to stop what it is doing at the press of a button. Such anti-barking dog collars are useful, safe, and quite affordable – however, as with all other such technologies, the above advice holds: do your homework, and never invest in anything that does nothing to address the root cause of your dog's barking.