Protect your property from dangerous and unsightly bird droppings with Bird-B-Gone Bird Spikes. Bird Spikes are an effective and humane way to keep birds such as pigeons, seagulls, osprey and crows from landing on boats, docks, pilings, window sills, ledges, rooflines, under eaves, and more. Bird-B-Gone spikes are virtually invisible and come pre-assembled in 1 foot sections and provide 7x9D x 6 area of coverage. The spikes are easy to install with glue or screws. Plastic Bird Spikes from Bird-B-Gone are made with a U.V. protected rigid polycarbonate plastic and carry an industry leading 5 year guarantee.