1 x PetSafe spray collar "PBC19-16370",anti-bark collar for dogs. If the dog is old, has a reduced hearing range or is on the stubborn side the chance of it working will be reduced. For example a dog left out in a garden that barks at birds or other low level concerns would find the noise annoying and probably stop or reduce their barking but a dog that is guarding or has separation anxiety may still bark through it.
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