Irri-tape bothers all of a bird's senses. Birds are scared by the material's sheen as the light causes constantly changing reflections and shadow. Birds are rattled by the metallic noise made as the tape blows in the breeze. Simply cut and tie strips of tape near areas where birds have become a problem. Economical and ideal for plants, gardens, vineyards, and trees. 1" W x 50' L roll.