Dogtra Pet Fences give your pet the freedom to run free in a large and safe environment. Dogtra pet fences are held to high standards as are all Dogtra products. The system is smart and knows when the device is not in use and switches to sleep mode which makes the charges last even longer. Read through Dogtra pet fences and decide based upon its merits whether or not it is suitable for your needs. Shopping for pet fences can be confusing and we are here to aid you in any way we can so please call us.