I am now killing mosquitos by the millions and love it.  I live on the bay in Panama City and mosquitos make life outside miserable almost year around.  I bought this thing a few weeks ago and after a couple of nights it started popping and killing them my the multitudes.  I have to take air tank and blow out the mosquitos every few days  because killing so many of them.  I can already go outside and not be bitten immediately.  I bought the 1 1/2 acre one because I have a large lot with a lot of trees and water all around which is mosquito heaven.  Brought them a little surprise and it is now lights out for the pest!  I suggest you put it on dawn to dusk timer which will extend life of bulbs for long time.  Does not work during daylight anyway.