We don’t recommend using bark collars.
Bark collars try to stop your dog from barking by making them uncomfortable – or in some cases even causing them physical pain. This is clearly cruel.
As well as being cruel, bark collars are not as effective as other training methods. This is because they don’t get to the root cause of the problem. Also, the dog may not make the connection between the discomfort caused by the collar and their barking.
This is also true for whining.
While bark collars may, possibly, help to stop a dog from barking or whining, there’s a good chance they won’t work at all. And even if they do, you could have achieved the same results with more effective and less cruel methods.