PetSafe Stubborn Dog In-Ground Fence for Dogs and Cats Comes with 3 collars and enough wire to cover about 4 hectares. $100. As seen here. https://www.amazon.com/PetSafe-Stubborn-Waterproof-Vibration-Correction/dp/B000GF1O4K Read more… Started by CMC 4 Replies · Reply by CMC Nov 3, 2021