Don’t own a breed that is pretty much quiet all the time? The Bark Buster ought to do the trick when it comes to keeping your four-legged friend quiet – this sonic device will emit a high-pitched pulse inaudible to humans that will irritate the fur out of your dog, although it is harmless in a way. This will kick in the Pavlovian behavior of remaining quiet at all times, barking only when the situation calls for it (such as when a stranger with ill-intention comes your way). Effective within a 20 foot radius, the Bark Buster comes with two sensitivity levels – and can be used indoors as well as outdoors. You can pick up the Bark Buster for $14.99.