Bird-X 50 ft. Plastic Bird Spikes SP-50

"Block pest birds from their favorite landing and roosting surfaces with Bird-X Bird Spikes. Tough, long-lasting polycarbonate material provides maintenance-free protection. Transparent material doesn't mar the look of a building. The spikes function as a 'keep-out' sign for birds. The density of spikes is branched from the vertical shafts to offer impenetrable coverage. Spikes allow mounting on most surfaces and are easy to install with adhesive (not included). Each foot of spikes covers one linear foot, and a ""spread"" or width of up to 6 inches. It's the most effective, inexpensive, and permanent solutions to keeping those annoying birds off any commercial or residential surface. 50 one-foot sections per box."