After getting a few quotes of other invisible fence companies in the area we decided to go with Pittsburgh Pet Fence. The installation was very fast and covered 1 acre of our yard. Ed came out in the afternoon after the installation and went over everything. My husband & I were very pleased how our Collie Cody did with the training. Within week we had him running free through the yard with no worries. I have to admit, I was skeptical that he would be trained so fast, but he actually was trained when Ed left that afternoon. I highly recommend Pittsburgh Pet Fence!