Safe to Pets and Humans: the bark control device is designed with a high pitched ultrasonic sound that is harmless to pets and humans, which can be applied indoors and outdoors; Because it is ultrasonic, it means humans can't hear the dog device that stops barking, but dogs can; It will get the dog's attention, but will not cause pain or irritation 3 In 1 Anti Barking Device: this stop dog barking device provides a safe and effective solution for dog training and bark plugs, which can help prevent barking, digging, scratching and other undesirable behaviors; There should be no wall or other obstructions in the field, as this reduces the deterrent effect of barking LED Flashlight with Multiple Settings: the dog barking control devices include dual strobe LED flashlights that not only deter barking dogs, but can also offer a secondary method of deterring approaching dogs; Pressing and holding the button not only emits ultrasonic waves, but also causes the bright LED to flash rapidly and scare dogs away; The bright flashlights can also be turned on and applied to light the way home Comfortable to Hold: you will get 2 pcs of dog barking control devices packaged in a box; They are compact and lightweight, with a ultrasonic bark plug, a S shaped curved handle, pleasant to hold, bringing a joyful experience Warm Gifts: these dog deterrent devices come with a wrist strap that fits comfortably in your hand or pocket, saving space; You can send it to your friends, neighbors, family members and coworkers who have pets, to show your warm heart and kindness