Keep pest birds and climbing animals away with NIXALITE wildlife barrier spikes. With 120 points per foot these versatile stainless steel spikes will deter even the most determined critters. Install on ledges, fences, gutters, roof peaks or nearly any object where birds and animals can roost, nest or climb. Effective for most all birds and climbing animals like squirrels, raccoons, cats, opossums, large rodents and even snakes in certain situations.