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Review title: Short-lasting effectiveness
Product review: Either our little dog quickly developed a high tolerance for the Petsafe Bark Controller or the device quickly lost its "juice". Battery check shows no problem. Our dog "recognized" the unit and for about 4 days either stayed away from it or limited his barking when near it. Soon afterwards, though, he had completely ignored the controller and can bark within inches of it with no effect. Problem with products like these is that there is no way to check whether the unit is still emitting the level of ultrasound necessary to control barking. Conclusion: very short-term deterrent, and overall waste of money.
