Bark shock collars the collar automatically emits a safe amount of shock or static when a dog barks. spray bark collars patpet spray bark collar releases a nontoxic and safe citronella mist to help trainers control their dogs’ barking habit. anti bark vibration collars. Now you can experience the difference a remote training collar can make. spend less time training and more remote transmitter: transmits time enjoying your dog. the patpet remote training collar is easy to use with an advanced digital display that the signal to the receiver collar. page 5: operating guide.