Avian Block™ is an aromatic bird repellent that uses passive scent technology to disperse Methyl Anthranilate (MA) into the air to effectively repel all birds from outdoor and semi-enclosed areas. Simply hang the pouch to keep nuisance birds at bay for up to 3 months. Each pack includes 6 pouches Each pouch protects a 10’ x 10’ x 10’ area (1000 cu. ft.) Increasing coverage is as simple as placing an additional pouch Repel all types of birds, including geese, woodpeckers, and grackles. Great for residential, commercial, and agricultural properties Not recommended for nesting or heavy bird pressure situations