This is a good little article by Daniel Waser. Have a read through it to pick up some extra tips on how to stop your dogs barking.
Barking is a perfectly natural and normal behavior in dogs, but can be very frustrating, tiresome and even embarrassing for the owner.
If you have tried and failed with various other training methods to discourage inappropriate barking in your dog (such as positive reinforcement activities or just plain giving him more attention), then the Ergo Systems No Bark Trainer might be something you are considering.
Bark control collars and devices are a last resort and should only be used AFTER you have attempted other training and positive reinforcement methods to curb your dog’s excessive barking.
A stop bark collar is not an answer to attention seeking behavioural issues!
Try Natural Remedies for bark control before resorting to a collar.
A barking control collar or device should never be used to completely stop your dog from barking all the time, but only for excessive barking.