Reflective tape confuses the bravest of birds. Even a slight breeze will cause a fluttering sound as well as mirror-bright reflections. Scare Tape is most effective on flocking birds attacking young seedlings, fresh germinating seeds or ripening fruit (do not put the tape up before fruit begins to ripen). This reflective prismatic pattern film annoys all kinds of birds with its rainbow flash of colors as well as the fluttering sound. Use 2 ft. long streamers in orchards and 8 in. - 10 in. streamers in vegetable rows or grapes, at a minimum rate of 1 per 10 in. - 20 in. within the problem area. Streamers can be attached to tree limbs, trellises or sprinkler risers. Material: Nylon.