When we moved to Washington, we were coming from life in a big house with a backyard, and Jack made the transition much easier for our three dogs. A year and a half later, after losing the oldest of the three, Jack has been very helpful in calming down our two dogs, helping solidify the relationship for the remaining two, and helping our willful Labrador gain confidence, reducing her anxiety. She's a completely different dog, very playful and outgoing now. Bark Busters is wonderful, and we have recommended them to many people. Thank you!