Each reflective scare bird diverter is tear-drop shaped and includes a swivel attachment which allows the bird diverter to rotate 360 deg for added effectiveness. Each bird diverter measures 5-1/4 in H and 3-1/2 in W and are sold 5 per pack. These are visual bird deterrents and should be hung using twine, string or rope, right in front of and around problem areas. When hanging, alternate the lengths and space about 2 to 3 ft apart. Reflective scare bird diverters can be hung in trees, from masts, spreaders, balcony covers, gazebos and other areas.