By: J DoebHave two Great Danes that nothing worked to keep them in the yard. We tried the instant fence, and in ONE day (no exaggeration) the dogs were trained and don't leave the yard, even without the collars on.
Dogs learn to jump through a one shock system, this one keeps "reminding" them with shocks until they're back in their zone.
Whoever invented this did a great thing!! Thank you!!!
Review ID: 252
out of 5-stars.