Super Zapper!  Got this and put it up the same day, around 7:30 pm, when the mosquitoes really start coming out in hordes.  I stepped outside a couple of hours later, and it was zapping constantly!  I mean it literally was killing 100 a minute.  The next morning I checked it out, and I can say this to all the bugs cruising around my backyard:  If you fly, you DIE!!"  I just ordered a timer for it, so I will probably run it from about 5:00 pm until 8:00 am, although I am sure it would still be zapping a few more during the day,  Great product so far!