For the first few evenings of use, I had the Flowtron 80 hanging from a Shepard's Hook that had once held a flowering plant.  This placed the unit about four feet off the ground and the kill rate, while acceptable, was not a great success.  It should be higher and mobile.  I rescued an old deck umbrella  holder and piece of PVC pipe about eight feet long, a 90 degree fitting and another piece of PVC approximately twelve inches long.  Screw a small eyebolt into the short piece of PVC and there it stands.  A moveable Flowtron 80 holder.  The electronic device is working properly, attracting and zapping each bug that comes within it's zone of influence.  After I worked the "bugs" out, I also used the other reviewer's suggestion to enlarge the openings, this is a bug killing machine...Lynn, in Nashville...