Bird-Out Aromatic Repellent is a fast acting, trouble-free solution that keeps pest birds away from patios, decks, garages, warehouses and other outdoor areas. Each easy-to-use cartridge contains a 20% concentration of Methyl Anthranilate, a food-grade ingredient proven to repel birds. Activate the cartridge with a twist, snap it into the dispenser, and enjoy up to 60-days of effortless protection.