Arthur installs underground invisible pet containment fencing as a side job. I cannot say enough great things about his professionalism. His equipment is first rate and attention to detail is excellent. He even places any exposed wire into conduit where it goes from the house to the ground. After getting a quote for $2000 from another company I considered buying and installing a system myself. I am really glad I did not do it myself, you need a specialized machine that cuts a groove and lays the wire at the same time. Arthur did the job far better than anyone else for less than one third the cost. His system has adjustable range and shock levels just like Invisible Fence brand. About three weeks after the system was installed I got an alarm that there was a break in the line. I didn't realize my irrigation company cut the wire while installing an irrigation line. I called Arthur and he came out the next day and found the problem and fixed it. When I asked him what I owe him, he said don't worry about it just put a post on the De-Fence facebook page. De-Fence has my highest recommendation, they are the only company you should consider for an invisible fence installation.