PRINCIPLEThe range of sound waves that humans and animals can hear is different.Our dog repeller uses this principle to emit waves that only dogs can hear,but humans cannot.This kind of sound will not affect humans,but it can attract the dog's attention and prevent their bad behaviors,thereby achieving the effect of driving away dogs and stoping barking. (black) DOG REPELLENTOur dog repellent stick can emit harsh waves, which is annoying to dogs. It drives away unfriendly dogs and protects oneself from attacks by bad dogs when walking, jogging or riding a bicycle. Our Products is to stimulate the dog through physical methods, it will not harm the dog, nor will it affect the dog's health. DOG TRAININGOur product can effectively stimulate the dog's nervous system,so that under the guidance of the owner,it can stop barking,digging,fighting,chewing furniture,eating unsafe food and other bad behaviors.It is suitable for training a variety of dogs,such as pets,police dogs and shepherd dogs. ILLUMINATIONOur dog repeller also has the function of lighting.The light can let dogs know the source and location of sound, thus know that you are driving it away.The harsh sound will keep dogs away from the sound-producing device,thereby protecting you from attack of vicious dog when you are outdoors at night.If in a safe environment,the dog repeller can also be used as an ordinary flashlight. EASY TO CARRYOur dog repeller is small and light,with a lanyard.You can put it into your pocket or bag and carry it anywhere,such as jogging or cycling.Our product is particularly suitable for outdoor work,outdoor travel and night security patrols, as well as various forms of dog training.