Three Types of Anti Bark Collars
There are three types of anti bark collars on the market. All are made to stop or at least control excessive dog barking. Different dog owners are comfortable using different collars. Whatever one you decide to use I can assure you these devices do work and can solve your annoying problem of hearing “bark” every five minutes.

Here are the choices you have: shock collars, citronella collars, and ultrasonic collars.
Shock Collars
These dog training devices shock your dogs into submission. They are not made to hurt your dog but they do give them a clear message.
Every time your dog barks with one of these things on he or she will get shocked. The bark has to be more than three times and over a certain level for it to kick in. This type of anti bark collar is by far the most popular.
They work very quickly, usually within a day, but many dog owners find this type of anti bark collar inhumane.
Citronella Collar
Dog’s hate citronella spray. It is a substance that is also used to repel mosquitoes and quite non-toxic.
Nevertheless, dogs cannot stand the smell and are annoyed to death by it.
There is just something about it that bothers their sensitive noses and when they get sprayed by this anti bark collar the barking ceases immediately.
A citronella bark collar is worn around a dog’s neck and once they get over a certain tone it shoots a quick burst of this spray (very little amount) into their face.
Ultrasonic Collar
A dog’s hearing is more advanced than a human. He or she can hear sounds we could never hear. This anti bark collar works off that premise.
It starts to emit a high pitched sound when your dog starts to bark. Like the citronella dog’s find this very annoying. Their acute sense of hearing just cannot take it.
They will shut up immediately. You will not be able to hear any sound but they will. You can by this as a collar or as a stand alone device. Many people feel that the ultrasonic bark collar is the most humane training tool out of the three.
Ultrasonic Bark Collar for Dog Training
There are three types of collars used for training a dog to stop barking. All three choices have their pros and their cons. The three options you have are a shock collar, a citronella collar, or an ultra sonic collar.

Today we are going to take a look at the ultra sonic bark collar. Unlike the other collars which administer a punishment on your dog via a shock, or burst of concentrated spray, these collars are primarily sound based.
As you probably know a dog’s sense of smell is extremely sensitive and thousands of times better than humans. What you may not know is that a dog’s sense of hearing (sound) is also very acute and frequencies that we as humans cannot hear can bother them.
When an ultra sonic bark collar detects your dog barking too loud or excessively it sends out an extremely high pitched sound frequency. It is a tone that most dogs just cannot stand. It does not hurt them in any way but it annoys them to no end.
Your dog will get this high pitched noise (which they find unbearable) every time they bark over what is considered acceptable and will start to associate their barking with the negative response they get. As with anything that causes pain (as for humans) behavior patterns are modified to avoid it.

Again, this frequency does not harm your dog. Personally I do not think anti bark collars that operate on shock and spray mechanisms hurt your dog but obviously there is a difference of opinion on that with some people. This collars causes no pain whatsoever.
Keep in mind this also. You can buy ultra sonic devices in not only collar form that go around a dog’s neck but also ones that do not. They have for sale stand alone ultra sonic units that you can set up and make go off my remote.
You can have the unit in your living room and when your dog starts barking you press a button and it goes off. You would be surprised by the results you get. You can also use it for other neighborhood dogs. Some of the more higher quality models have a very high range.
These anti bark collars that train a dog off high pitched sound cost $100 or more. There are some that are less than that amount but they work poorly. The stand alone units are a little more.