Bird-B-Gone Bird Repelling Spikes For Assorted Species 20 pkStainless Steel Bird Spikes. The 20ft Kit comes in 1 foot strips so you can choose by the linear feet you need to protect. Use on your buildings and structures to keep pest birds from landing and roosting. Keeps birds from landing or nesting on ledges, parapets, roof peaks or anywhere birds land Ideal for pigeons, seagulls, crows and other large birds Attaches easily with screws or glue 5 inch width of coverage No assembly required 10 year guarantee