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Review title: It doesn't work
Product review: I purchased this item with high hopes for my barking dog. However, after the initial ultrasound release, my dog wasn't effected by it anymore. He barks just as much as he did before I bought this unit. Everytime he barks, the red light goes on, and he just keeps on barking. This device doesn't phase him at all. I changed the batteries twice and it just doesn't work on my dog. I am very disappointed and am returning it. I highly suggest going with the Innoteck Citronella Spray bark collar....it works great!
