The Flowtron unit works great.  The thing I like best about it is that the spectrum frequencies of the ultraviolet light seems very effective at attracting flying insects that are seeking light such as moths.  I have tried a different variety that uses a darker spectrum of light, darker to the naked eye, and they do not work nearly as well as this unit does.  I had some longevity issues with a prior Flowtron unit that I had purchased, so I cannot say anything about the long term reliability of  this unit, but it is very effective for clearing your area of bugs attracted to light.  I do not have a problem with  mosquitos so while the unit comes with mosquito attractant, I cannot tell you if this is effective for them.  I would  expect a unit such as this to last for several years as prior unit of this variety have for me.  We shall see.