HUMANE BIRD DETERRENT SPIKES: Are you tired of constantly dealing with bird droppings? Bird spikes for outside are an effective, humane solution. This will not cause great harm to birds or people. BIRD DETERRENTS FOR OUTSIDE: Bird spikes adding a lot of small nails, the unique high spikes design makes it impossible for birds to stand and stay around. Perfect for pigeons, sparrows, crows, seagulls etc. NO MORE BIRD NESTS & POOP: Bendable and easy-to-cut base make Pigeon spikes can be installed in any area, very suitable for ledges, rooflines, window sills, eaves, I-beams, gutters etc. UPGRADE DESIGN: Our bird deterrent use the latest design, the width of the bird spike is increased. Each strip nail can bend and separated, easily adjusted to size with break-away points on spike base. FLEXIBLE INSTALLATIONS: These pigeon spikes for outside come disassembled. Our spike comes with pre-drilled holes, you can anchor them with a zip tie, screws, double sided tape etc. Bird Spikes