Bird Barrier Dura Spike - 100% Stainless Steel 5" Wide Bird Spike Kit with Adhesive (Covers 10 ft.) Keeps Pigeons and Seagulls off ledges, railings, signs, and ridges Humane. Blunt tips do not harm birds. Creates an unsuitable landing area for birds, causing them to relocate. Extremely effective. High quality Stainless Steel construction with a 10 year product warranty.