Effective Dog Repeller: Our ultrasonic dog repeller is designed to deter dogs from barking excessively or approaching unwanted areas. It emits high-frequency ultrasonic sound waves that are uncomfortable to dogs, encouraging them to stop barking or stay away. (Without Battery)2024 Upgrade Technology: This device incorporates the latest 2024 upgrade technology, ensuring enhanced performance and effectiveness in deterring dogs. It provides a reliable solution for addressing excessive barking problems.Super Ultrasonic Dog Chaser: In addition to deterring barking, this device can be used as a dog chaser to keep dogs at a safe distance. The ultrasonic sound waves act as a deterrent, discouraging dogs from approaching you, your family, or your property.Indoor and Outdoor Use: Whether you need to control barking indoors or outdoors, this ultrasonic dog repeller is suitable for both environments. It can be used in your home, backyard, or during walks, providing versatile and convenient use.Safe and Humane: Our ultrasonic dog repeller offers a safe and humane way to discourage unwanted behavior in dogs. It does not cause harm or pain to the animals but rather serves as a gentle reminder to modify their behavior.