【Effective for Dog Training】- which uses the principle of ultrasound to emit sound waves to interfere with the dog, so that it feels stimulated and stops the current behavior. can help owners control nuisance barking and prevent some bad behaviors of dogs, such as excessive barking, chasing, feeding or fighting etc. Suitable for dogs of different sizes (except dogs under 6 months and aggressive dogs). 【Adjustable frequency technology and 2 in 1】- Ultrasonic Anti Barking the side button has three sound wave modes different. After a long period of adaptation, the pet’s hearing will lose its immunity to certain sounds, so multiple sound waves will destroy the dog’s resistance to certain sound waves. It can extend the effective use time of the product, so that you can alternately use different sound waves every cycle. 【Safe for people and dogs】- the bark control device with ultrasonic uses the latest ultrasonic technology, The uses a frequency of 22-25 KHZ, which is difficult for human
