PetSafe Boundary Flags (Bundle of 50), For Use with PetSafe's Dog and Cat In-Ground Fences and Wireless Fences - From the Parent Company of INVISIBLE FENCE Brand, White, 3"x2.5" flags

Extra boundary flags for training your pet to use an in-ground or wireless fence. Place flags approximately 10 feet apart to remind your pet of his off-limits area. Between days 15 and 30, you will be monitoring your pet's progress. After you are satisfied your pet's training is complete, remove every other Boundary Flag every 4 days until all flags are removed. In about a month, your lawn will be free of training flags and your pet will know his limits. We recommend keeping a flag or two in your yard to let neighbors and passerby know that your pet is securely contained.

• 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
• U.S.-BASED CUSTOMER CARE: Our pet product experts are here to help you and your pet and are available by phone, email or chat if you have any questions
• 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

Source reference: https://www.amazon.com/dp/B0050CYFE0