The Flowtron BK-80D is OK but the Flowtron 15060 is better.  The Flowtron 15060 uses only half of the electricity and in my testing zapped more mosquitoes. The Flowtron 15060 uses a single 40watt black light bulb.  It also has a plastic mesh to reduce the number of moths caught.  The mesh hole dimensions are 3/8" wide and almost 1/2" high, which may be close to optimal.  I have tried 1/2" x 1/2" mesh with the Flowtron BK-80D but that allows too many moths in.  I have also tried 1/4" x 1/4" wire mesh and that works fairly well but may keep the larger mosquitoes out.  Short lengths of 3/8 x 3/8 mesh is available in stainless steel but is very expensive.  I was initially hoping that the Flowtron 15060 would have two bulbs, like the Flowtron BK-80D but decided to try it out.