Effective Bird Defense: Stainless steel bird spikes can effectively prevent pigeons, sparrows, crows and other birds from nesting on balconies, window sills, windows, gutters, roofs, say goodbye bird droppings! It can also effectively prevent cats, minks and other animals. Humanized expulsion, no killing Structural improvement: The tips of Yucuzft stainless steel bird spikes extend not only to the sides but also to the middle, each independent rail has 30 spikes (11 in total 360), the high spike density further strengthens the defense even for small birds Impossible to build spike nests either Easy to adjust: Stainless steel bird spikes offer maximum flexibility with 12 individual rails (25cm each, 3m in total). The pre-determined stopping points can be arbitrarily adapted for use in tight spaces, and the snaps at the ends can be easily spliced together for wider coverage High quality: The bird spikes made of stainless steel are made of stainless steel and clear polycarbonate, they are rust and UV resistant. It can be used outdoors for a long time in sunny, rainy and snowy weather. The transparent base does not affect the aesthetics of the building after installation Multiple mounting methods: The stainless steel bird spikes have 6 holes drilled in the base of each individual rail which can be easily fixed with screws (30 included) or plastic cable ties (25 included), or with mounting glue (not included)) to fix