Bird-B-Gone® MM2000-5/6 Plastic Bird Spikes, Clear, 5" x 6'Bird B Gone Polycarbonate Bird Spikes are an effective, humane solution for deterring large birds from landing in unwanted areas. Birds cannot land on the un even surface created by the spikes and will move on. Bird B Gone Polycarbonate Bird Spikes are used to prevent large birds from landing on flat or curved surfaces. Birds cannot land on the un even surface created by the spikes and will move on to a better spot. Bird B Gone Polycarbonate spikes