Personally I just let Tibbe bark at certain things such as the mailman and garbage truck and squirrels as "doggie therapy" but should he just go on until I'm uncomfortable or I think he's going too long, he's trained to stop and be quiet on command for great reward and Mommie's great pride in his ability to stop and say quiet. The reward he gets for stopping is greater than his enjoyment of barking so he thinks it's a good deal.
