Block pigeons and other birds from their favorite landing and roosting surfaces with Bird-X Stainless Bird Spikes. Tough, long-lasting polycarbonate and stainless steel material provides maintenance-free protection. Stainless Bird Spikes won't mar the look of a building. The spikes function as a 'keep-out' sign for birds. The density of stainless steel spikes are branched from the clear polycarbonate base to offer impenetrable coverage. The flexibility of spikes allows mounting on most surfaces and is easy to install with adhesive (not included). Each section of spikes covers two linear feet, and a "spread" or width of up to 4.5 inches. Pests: birds (pigeons, sparrows, starlings, crows, blackbirds, grackles, seagulls, swallows and more), bats, climbing animals and more!