Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Quite house!

I have 3 large breed dogs; a great pyrenees/lab mix and 2 full breed labs. They are all barkers. I've tried 2 different shock collars and nothing worked. I recently bought the anti-bark collar and my house has never been so quite. I wish I would had tried these collars a year ago! My dogs have each barked ONCE since wearing the collar. I've never seen anything work so quickly and effectively before. I'm a very satified customer.