No problems here. Works great!

This bulb burned out in less than three weeks. The last bulb I bought from the same company lasted a year. Their resolution for me is to send this burned out bulb back to them to get a refund and then re-purchase, which I am not going to do, it is not worth my time. I will not be buying from this seller again ever

This lamp has to be used with a Dynatrap mosquito trap. It is not a mosquito repellent, as denoted in the dynatrapoutlet.com product description. It attracts mosquitoes and kills them in the trap. This is the reason you should set it up 20-30 feet from the area you want to protect, so that it draws mosquitos away from your living areas. Effectiveness is hard to really quantify due to a couple of factors. It does collect a lot of mosquitoes, as well as many other insects, such as moths, flying ants, small wasps, etc. So when you empty the trap, you may have difficulty seeing a the mosquitoes due to the fact that they are much smaller than the other insects trapped. If you kind of sift through the remains, you can see the mosquitoes as well. The amount that are killed relative to the population in the area is unknown. Making a comparison based on how often you are bitten is hard, because it depends upon the amount of time you spend outside and other things that affect the mosquito population, such as rainfall (standing water), presence of predators that feed on them, etc. Our general observation is that you can and will be bitten if you stay outside for very long at dusk or after dark, but that the frequency of bites is less. Hope this helps. We think that we have enough evidence of effectiveness to keep buying the bulbs and using the trap.