Underground dog fences are a great way to contain your dog within your yard while still allowing them the space to run around freely.  Many underground dog fences come with dog fence wire and flags included, however quite often your yard is actually bigger than the average yard and you need more dog fence wire and flags, or you would like to upgraded to heavy duty dog fence wire due to environmental conditions . Maybe you would rather staple your wire down and let the grass grown over it instead of spending hours burying the wire.  In any case you'll find all the wire, flags and accessories you need below.