Dog Guard's system is a wireless, underground electronic pet containment system that keeps 1 or more pets (including cats!) safely contained on up to 50 acres of property, without obstructing your view or the maintenance requirements of a traditional pet fence. An indoor pet fence is also available. Professional dog training brings the whole system together and makes it so effective that we offer a money-back containment guarantee on top of a Limited Lifetime Equipment Warranty from Dog Guard.