Description Upgraded Bird Spikes: Compared with other bird spikes, our bird deterrent spikes add a lot of small spikes beside the regular long spikes, which can effectively prevent birds raccoon cats and squirrel from staying in the gaps of the long spikesMade for All Weather: Our bird deterrent spikes are made of high-quality acrylic plastic material, which has weather resistance, chemical resistance and toughness, and can withstand wind, rain and sun exposure, so the plastic fence spikes have a long life rangeEasy to install: It is very convenient to install. There are three ways to install the bird spikes. Just fix the bird deterrent spikes on a flat surface with nails, or tie the bird spikes to the surface with a strong tie, or glue the bird spikes with double-sided tapeHumanized: Our bird spikes use plastic instead of glass slag, which does no physical harm to small animals. The bird spikes will only cause them a stimulus to make them fly away, and thus will not really hurt themPackage Contains: A set of 20 strip spikes, each strip nail has a length of 11.8 inches and a total length of 19.7ft. Each strip spike has 3 bendable separable sections, each with a length of 4 inches and the width is 1.57 inches