[1] Its best-known product consists of an underground wire and a collar with an integrated transmitter that provides a signal to the pet when it approaches the perimeter.

[citation needed] In the 1970s, traveling salesman Richard Peck worked as a sales and product manager for companies in Pennsylvania.

Peck formed a company called Stay-Put Sales Co. and marketed his product mainly through direct mail and magazines.

Purtell created a company named Invisible Fence Co.[4][5] In the 1980s, the receiver the dog wore around its neck was around the size of a cigarette packet.

[6] Invisible Fence Co. lost exclusive rights to Peck's invention when the patent expired in 1990.