Petsafe Bark Deterrent System

Microphone sensor detects any loud noise within approximately 15 m and emits an ultrasonic noise (not audible to humans but uncomfortable for their sensitive ears) settable range of 5, 10 or 15m. Not harmful to dogs.

Used for a short trial period, good response on some dogs, it all depends on the dog's hearing. Some dogs are not affected by the ultrasonic noise. Can be used for controlling barking of neighbourhood dogs as well. Not very effective for Bassets, Labradors, Spaniels, Maltese poodles

Uses 9V battery

Hangs outside, disguised as a bird house

Not for inside use