Key Points: 1. Durable and Weatherproof: Our bird spikes are made of robust, high-quality polypropylene, making them extremely durable. Unlike metal bird spikes, ours are also weatherproof and won't corrode. 2. Highly Effective and Humane: Our bird spikes mimic the structure of thorny plants. The polypropylene spikes prevent birds from landing without harming the animals. 3. Easy Installation: Our anti-squirrel spikes are very easy to install. Simply fix the spikes to a flat surface with nails, tie them to the surface with strong rope, or attach them with double-sided tape. 4. Meets Your Needs - No Need to Worry About Size: Our fence and wall stake kits come with one stake every 43 cm (16.9 inches) to fit fences and boundaries of all lengths. Just make sure you buy enough to cover all the boundaries of your garden for best results. 5. Versatile Applications: Our bird spikes can be installed on any flat surface (fences, gates, sheds, railings, window frames, walls). Suitable for cats, raccoons, birds, etc. Specifications: Strap Dimensions: 43 × 4 × 3.5 cm (16.97 ft) Black. Package Includes: Fence Posts (12 posts per pack). Seller Warranty: 7 days