These stainless steel bird deterrent spikes require no time-consuming or labor-intensive assembly, they can be taken and installed directly, making them ideal for scenarios where bird infestation issues need urgent resolution. Designed to mimic the structure of thorny plants, they have a shiny surface that reflects sunlight. By leveraging the behavioral weaknesses of birds, they help alleviate problems such as excessive bird droppings and messy bird nests, while ensuring a humane bird-repelling process. Crafted from high-quality 304 stainless steel, they are more durable and long-lasting than plastic-based alternatives. They require no maintenance even after up to 15 years of use, can withstand various weather conditions, and remain intact without loosening or rusting, even after heavy snow and strong winds. Each bird deterrent spike measures 4 inches (100 mm) in length and 3 inches (76 mm) in width. Unlike products that only have 2-3 prongs, each set of prongs on these spikes is equipped with 6 needles (arranged horizontally and vertically), enabling more comprehensive 360° coverage. These bird deterrent spikes have a wide range of applications and can be installed in various areas. They are especially suitable for standard 4-inch-wide windowsills and can also be used in bird dropping-prone locations such as rooftops, gutters, balconies, windowsill edges, and doorways.