When introducing your dog to a new invisible electric fence set up and as part of his initial training, you will use flag markers to indicate the set boundary area and where a warning will be emitted if your dog crosses over. As well as letting you know where the boundary limits are, these flags are intended to be visible clues for your dog so he can instinctively learn where the edges of the fence are. Initially your dog will over-step the mark and experience the warning beeps as well as corrective shock given out by the fence system if he continues to proceed. The presence of the flags will help him to learn where his boundaries are.
The flags can be removed gradually in pace with your training and as your dog takes it all on board and successfully memorizes the fence’s border.