Bird spikes provide effective protection on rooftops ledges fences and more! Bird Spikes are made of durable stainless steel and require zero maintenance. Stainless Steel Bird Spikes provide total pest bird protection and can last a lifetime. Easy to install using silicone or other exterior grade adhesive. Spikes are not very visible. More effective than owls and other scarecrow devices. Stainless steel bird spikes eliminate the mess and constant cleaning caused by roosting and landing birds. Effective against pigeons starlings sparrows seagulls and most other birds. Includes 10 linear feet.