The first one that I received burned out as soon as I turned it on.  I reordered and put the second one up last week.  It seems to be working quite well.  My yard was partially under water due to a 10 inch rainfall and the mosquitoes were so thick that we didn't want to go out.  We've had several cases of Zika and Encephalitis in the county and needed to control the mosquito population.  We have one dog that has seizures and another one with cancer, so we couldn't use pesticides.  This insect killer does the job without endangering the dogs.