Barking is a common issue in most dogs. The hard part about addressing barking is that there are a lot of different reasons why your dog barks. Barking can become an involuntary behavior in insecure dogs when they are scared or excited. Your dog may be barking because of different scenarios, and each scenario should be handled in their own way; something a bark collar may not be able to fix.
In this video, JJ Belcher explains his method of identifying why the dog is barking, and how to address those scenarios to find a solution that will work best for the dog.