🐕️【Automatic Citronella Dog Bark Collar】The citronella dog bark collar intelligently stops dog barking and automatically sprays to stop barking, and external sound does not interfere with the product. (NOTE: The product does not include citronella spray, please purchase it separately on Amazon) 🐕️【Harmless and Humane Training Aid】The citronella bark collar uses safe and harmless citronella spray to stop excessive dog barking and correct misbehavior. Using harmless citronella anti-bark collars, stop dog barking effectively, safely and humanely without physically harming your dog. 🐕️【Adjustable Sensitivity and Spray Volume】The dog bark collar works on different sizes of dogs at different frequencies. According to the barking of large/medium/small dogs are at different frequencies, the spray volume of the anti-barking device can be adjusted large or small, and the receiving sensitivity can be adjusted high or low. 🐕️【USB Rechargeable and Waterproof】The dog bark collar spray has a