This citronella dog bark collar is designed to train your dog to stop barking without the use of harsh chemicals or punishment. It is adjustable to fit small and medium dogs, and is suitable for indoor and outdoor use. The collar emits a harmless citronella scent when your dog barks, which is unpleasant to dogs and helps to interrupt their barking behavior. The collar is easy to use and adjustable to fit your dog's size, and is made from durable materials that are safe for your pet to wear. It is a humane and effective way to train your dog to bark less, and is a great choice for pet owners who want to create a peaceful and harmonious home environment for their pets.