Most of the dog owners who are concerned about the safety of their dogs use dog containment systems to fence their yards where the dogs are allowed to stay. Conceived on the basis of the negative reinforcement training method, these electronic systems are composed of a central unit, which receives signals from the proximity sensors and commands through radio waves the collar fixed around the dog’s neck to deliver it either a warning sound or a mild, safe and painless electric shock. The aversive stimuli are delivered to the dog only in the case it approaches too much of the proximity sensors that border the containment area considered safe by the dog owner. The proven rationale is that the dog will soon associate the unpleasant sensations provided by the aversive stimuli with the necessity to stop crossing the invisible boundary of the electronic fence Until today, millions of dog owners have bought pet containment systems in order to enjoy their advantages. These benefits include the following:. • The dogs are better protected against various mishaps, like road accidents or animal run-ins that can happen when they are outside the safe area. You will then be able to save on the psychological and financial costs of such accidents. The dog is protected in two ways. First, you will be alerted to the dog’s attempt to cross the line because of the large beep emitted by the collar, which can give you sufficient time to issue a verbal command or run after the dog or both. Second, your dog will also be alerted by beep to stop in his tracks. The dog that ignores the warning beep will receive an electric shock that will scare it and stop. You dog will then not go into the road in the line of passing cars or not be engaged in fights with other animals. Train your dog to come in house when it hears the warning beep. • Just a single shock is often sufficient for any dog to learn of the association between his bad behavior and the possible consequences. You can adjust the level of shock that will be delivered to your dog depending on its size, its temperament and the general circumstances surrounding the attempt to cross. Along the training, your dog will require fewer electric shocks and of lesser intensity. After a few weeks your dog will get used to stop when it hears the sound of warning, and then you can set the minimum level of intensity for the electric shocks to be delivered just in case. • You will be able to avoid spending time, money and effort to build a material fence. Keep in mind, too, that these physical fences require maintenance expenses including additional real property taxes, which is in contrast with wired and wireless electronic systems known colloquially as invisible fences. These electronic devices are portable systems, and you can easily allocate the area where you think your dog will be safe by bordering it with the proximity sensors. You only need to set the transmitter ON after you have put the proximity sensors on the borders of the safe containment area, and the whole dog containment system is ready to keep your dog within the house or yard or other place you want it to be safe. These dog containment systems allow pet owners to have peace of mind that their dogs have lesser risks to be exposed to accidents as well as lesser opportunities to run away, do damage on the neighbors’ property and get into other mischief outside of the house and certain areas of the yard