Bird B Gone MM2001-5/6 Bird Repelling Spikes, 5" x 6'Highlights: Bird Type: Assorted Species Coverage Area: 6 linear ft. Height: 7 inch Keep birds from landing and roosting For use on ledges, window sills, roof peaks and edges, flat or curved surfaces For pigeons, seagulls and larger Lowest cost bird spike deterrent Will not harm birds, # 1 recommended by animal rights organizations Patented bend and crush design for permanent installation Non reflective metal finish, will not deter from architectural