Mjokoj Bird Spikes, 20 Pack Anti Bird Spikes, Bird Spikes for Pigeons and Other Small Birds, Pigeon Spikes for Garden Fence and WallBrand: Mjokoj Color: Brown Features: SAFE AND EFFECTIVE PROTECTION: The bird spikes are made of high quality ABS, waterproof, anti climate change and long term UV radiation; the bird spikes can be used all year round. SUSTAINABLE PROTECTION: You can effectively avoid birds such as pigeons and swallows landing and nesting on ledges, railings, roof edges, frames and air conditioners. Thanks to this, railings and window sills stay clean and looking good.