Bird B Gone® MM2001-5/20 Stainless Steel Bird Spikes, 5" x 20'Bird B Gone Stainless steel bird spikes are an effective, humane solution for deterring large birds from landing or nesting. Bird B Gone Stainless Steel Pigeon Spikes create an uneven surface preventing birds from landing on flat or curved surface areas encouraging them to fly to a different spot. Bird spikes are made of stainless steel pins in a U. V. protected polycarbonate base. The base of the spike strip is 1 1 2" wide and can be glued, nailed,