Here is a system designed to keep stubborn dogs from escaping your property. The PetSafe Stubborn Dog In-Ground Pet Fence features 5 levels of static correction. It also has a tone plus vibration mode. It can accommodate pets 8 pounds and up.
This system will increase correction only if your pet tries to run through the boundary zone. The tone plus vibration mode is ideal for hearing-impaired dogs. The waterproof collar is submersible to 3ft.