Product Anti-Bark Ultrasonic Dog Bark Deterrent Key Benefits: Relieve the frustration of dealing with a barking dog with this innovative device. Effective Range: Indoor and outdoor design with adjustable range settings: Mode 1: Low Range (up to 25 feet) Mode 2: Medium Range (up to 50 feet) Mode 3: High Range (up to 75 feet) Safety: Safe and friendly to both animals and people; harmless to humans, animals, and plants. Utilizes a precise sonic frequency that may be inaudible to humans. Ease of Use: Simple to mount on a wall, hang on a tree, or place on a fence post. Easy setup for quick and effective use as a dog whistle to stop barking. Training: It may take up to 2 weeks for the dog to associate the sound with the deterrent effect. Durability: Durable and weatherproof construction for long-term use. Suitable for outdoor use in any weather conditions. Application: Ideal for both indoor and outdoor use, providing a versatile solution to control dog barking. Package Contents: 1 x Ultrasonic Dog Bark Deterrent Device Note: Before using the device, ensure it is placed in an optimal location for the best results.