Boundary Flags are to be used as a visual aid for your pet to help them learn the boundary you've determined for them.
Use the 50 boundary flags to provide a visual reference when training your pet to learn the boundary
Place the boundary flag in the ground every 10 feet near the warning zone
When you are satisfied that your pet has mastered training, you may remove every other boundary flag every 4 days until all flags are removed
Save boundary flags for future use
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PetSafe brand has been an industry leading US manufacturer of pet behavior, containment and lifestyle products since 1991, helping millions of people and pets each year