I bought my first one about 10 years ago or so after a ton of research. We had a breakout of Eastern Equine Encephalitis (EEE or Triple E), so bad they were cancelling sports and outdoor activities at dusk. I did a ton of research which for this discussion resulted in two conclusions.
1) Mosquitoes are extremely local, like, within a couple hundred feet. If you break the breeding cycle, which takes 90 days or so, it takes a long time for them to reestablish a population in that area. Hence, my old one broke in the fall of 2022 and I didn't have blood thirsty insects (it works on all biting insects) until the spring of 2025, so 2+ years for mosquitoes to reclaim my yard.
2) The methodology employed was used by the National Parks Service, but used a different technology. They used propane to generate the Co2 attraction, where this uses UV light that interacts with the aluminum casing. The gist of it is, UV light and Co2 attract the biting insects, a fan blows them into a chamber where they get trapped and die of whatever, starvation or dehydration.
I tried it and damned if after 6 weeks there were no mosquitoes. The new ones are both cheaper ($90 vs $200) and use LED lights instead of fluorescent, so they should be cheaper to run and less consumables.
This is the one I have coming.