The ultrasonic anti-barking device is the most humane and effective method. Ensure a quiet environment for you and your family when you talk, sleep, work and convince the baby, etc. Please note: The maximum detection range is 50 feet, the bell stopper is not triggered by dog barking when it is out of this range. The anti-barking device is not applicable in the following situations: aggressive dogs, loud environments, hearing impaired dogs, two or more dogs together, dogs under 6 months or over 8 years. It is not recommended to use one device at the same time against two or more barking dogs. Make sure that the anti-bark device is facing the dog within reach without obstacles. The use of the same ultrasonic frequency on the same dog for 10 days or longer is not recommended. The dog can be resistant to the same frequency. Please change the frequency every 7-10 days. Box contents: 1 x ultrasonic anti-bark device. 2 x fixing screws and anchors. 1 x user manual (English language not guaranteed)
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