We purchased the Pet Barrier Grounds Keeper Invisible Dog Fence to keep our lab out of our newly landscaped backyard garden beds. She had previously destroyed the old backyard as a puppy so we were determined to keep her out of the new garden. The Pet Barrier Grounds Keeper Invisible Dog Fence has been a fantastic solution to protect these areas whilst still giving her full access to the main yard. Once installed she has learned very quickly (within an hour) where she can and cannot go. I have even been able to pull down the wire fence from around our vege patch. No tomato stealing this season! The only problem was with Aussie Post's inability to deliver the package the first time however Colin and his team did a great job fixing the issue despite the postal service. Good job! The only negative of the product is that the transmitter unit is not weather-proof so must be plugged in to an inside power point. Would have been simpler if it could have been plugged into an outside power source.