||The SportDOG Brand® In-Ground Fence gives your dog room to run… but not run away! From city lots to large properties up to 100 acres, our system has been proven safe, comfortable and effective for containing all dogs over 10 pounds. Setup is easy: simply bury a wire at the perimeter of the yard. When your dog is wearing its collar and nears the boundary, it hears a warning beep. If your dog continues toward the boundary or tries to leave, the collar delivers a harmless static stimulation as a reminder to stay in the “safe” part of the property. With some simple training exercises, your dog quickly learns to respect the limits you’ve set.