Stix is a yapper so we sought help from The Dog Line. We started with a vibrating collar but her will to bark was stronger than her fear of vibration so we sought further help from The Dog Line and were advised to try the static collar. We purchased the static collar and walla no more barking. She has ad a few barks but jumps about 3 feet high and consequently stops barking. I am now able to vacuum the house without her chasing the vacuum cleaner and barking continuously. Thanks The Dog Line for fixing out yapping dog. She is now like a tamed lion and has become more lovable. Perhaps you should add excellent after Very Good. because it is an excellent solution.