"SafeYard™" is a trademark of Pet DeFence, Inc. "GentleStart™" is a trademark of PetCare Hidden Fence. All references to Invisible Fence® Brand or Invisible Fencing® on this site are registered trademarks of Invisible Fence® Brand. Pet DeFence, Inc. makes no claim to be part of the Invisible Fence® Brand, PetSafe®, Radio Systems®, DogWatch®, PetStop®, DogGuard® or Contain-A-Pet® companies. Dog Watch®, Pet Stop®, Dog Guard® PetSafe® and Contain-A-Pet® are registered trademarks of their respective companies. PerfectStart®, SafeDog®, PetSafe®, Innotek®, Invisible Fence® Brand, Invisible Fence® is a registered trademark of Invisible Fence, Inc.. PetSafe® Professional are registered trademarks of Radio Systems Corp. Pet Stop®, Comfort Contacts®, Flash Alert®, Safety Sto®p, Pet Fence Systems®, The Best Fence You'll Never See®, TriScann®, Zapp Alert®, UltraTuff®, UltraElite®, Link®, EcoLite®, UltraMax®, The Dog Fence People®, PowerWizard® and RoomWizard are registered trademarks of Perimeter Technologies, Inc.