Bird Away™ Spike Strips

It's the most humane way to prevent birds from roosting on sills, chimneys, window air conditioners, vents, downspouts...and it's worth the price just to eliminate their disease-carrying, exterior-damaging, droppings. Each 20"-long strip has 100 plastic "spikes" (2-1/4" tall) that prevent birds from landing. Nails included, or fasten with any exterior-grade caulk. You get four 20"x4-1/4" strips that can interlock end-to-end or side-to-side; may be cut to length.