Most dogs begin to associate barking with the BarkCollar correction after several activation’s of their receiver collar. If your dog’s receiver collar fits appropriately and is equipped with the correct size contact posts, you should see a noticeable change in your dog’s behavior. However, no two dogs are alike and there are many variables to take into consideration. The biggest of these factors is personality. Your dog’s personality plays a vital role in how quickly his barking behavior will change. For example, barking behavior in timid dogs may change more rapidly than in dogs with a stronger personality. Among other things are your dog’s tolerance for distractions when barking and the triggers at which your dog barks.