extreme dog fence electric dog fence boundary flags for visual aid during underground dog fence training - 50 flags extreme dog fence <b>extreme dog fence boundary training flags - 50 pack for 500 feet of boundary wire</b><br><br>when training your dog on a new underground dog fence system, whether it's an extreme dog fence system, or a lesser system, your beloved dog needs perimeter training flags setup as a visual aid. these flags are great training tools and a significant enhancement to the training experience for you and your beloved pooch.<br><br>you will want to place a training flag every 10 feet around the boundary of your pet containment system. these flags stay up for the duration of the training period and are gradually removed from the perimeter once training is successfully completed. they help to reinforce the fact that there is a static boundary that your dog should not cross.<br><br>after training is complete, you should remove every other flag on intervals of every 2-3 days. eventually, you will have removed all flags and you can save them in case you some day move to a new home and need to establish a new containment boundary line.<br><br>for additional electric dog fence parts and accessories, we invite you to shop in our amazon store and contact us with any questions we can assist with.