Bird spike is a ledge deterrent that works best on pigeons and larger birds. It is best suited to low and medium pressure situations, but is sometimes used in heavy pressure areas. Bird spikes are made from durable stainless steel and polycarbonate. They can be glued or screwed down to almost any surface. They are available in a number of different widths from 1 inch to 8 inches. They can effectively be used on I-beams, ledges, signs, parapet walls, pipes and other locations. Bird spike is flexible and can be used on flat or curved surfaces.