DISCLAIMER: I've only had it up for 2 days, so I can't speak to the long-term performance. SHORT VERSION: this device is INCREDIBLY effective if baited and set a good bit away from where you'll be hanging out. I have a well-fenced backyard with a lot of trees - there's almost no little breeze and a lot of shade. It's basically a mosquito castle. No matter how diligently I dump standing water and set up other traps (notably, Spartan Mosquito traps which did reduce the population but offered no immediate relief), my yard was FILLED with mosquitos. Tired of the harassment, I got used to literally showering with insect repellant at night. Earlier this week I thought, "maybe it's worth trying one of those expensive traps given how much money I'm burning on repellant/how tedious it is to apply it every single day." I'm glad I did, because this thing is AMAZING. The attached photo was taken after a single night of operation. The pile pictured is almost entirely mosquitos. Unfortunately (or fortunately, depending how you feel about them), several moths have been lost to collateral damage. It also seems to attract June bugs and miscellaneous small gnats/flies. I was very apprehensive about the "titanium dioxide coating emits CO2 attractant" claim offered in the product description. I did some background research, and there are at least a few sources supporting the following assertion "when exposed to air flow (fan), light (especially UV, which this device uses), and moisture (humidity0, Ti02 can accelerate the decomposition of organic matter (trapped bugs), releasing carbon dioxide in the process." I cannot verify how accurate that claim is, because - at the advice of other reviewers - I purchased a bait pack to include in the trap to be safe. There's a wide variety of bait options, I ordered the DynaTrap Attrakta bait (https://www.dynatrapoutlet.com.com/gp/product/B07BNV8H8F/ref=ppx_yo_dt_b_asin_title_o03_s01?ie=UTF8&psc=1). It appears to be very popular with mosquitoes based on the results from a single night! Overall, it's pricey, but is easily the most effective option I have ever used to control the mosquito population. I have tried all sorts of traps (Spartan, dunks, passive measures/best practices, etc.) - with lukewarm results. This is the first time I have noticed a major overnight change in mosquito activity around my yard. I especially like the screen trap container / light combo, which allows me to witness these little monsters falling prey to the device. Oh, and most importantly (besides using bait) - hang it AT LEAST 20 FEET AWAY from where you'll be sitting. When I approached the trap at night to check its progress, it was like walking into a mosquito tornado (Sharknado sequel idea!). DO NOT hang it it by your chair and expect to be safe - it will lure every mosquito in the immediate vicinity right to you, and you will have a bad time. From a quick experiment last night, I think this tip may be helpful for prospective buyers as well: let it run for a bit BEFORE you plan to do stuff outside. If you stay outside right after turning it on, your breath/scent will compete with the trap, which leaves you exposed and interferes with the trap's effectiveness as a mosquito beacon. Give them a bit of time to become enchanted with the trap, THEN you can do your business relatively mosquito-free! I strongly recommend this item. A1, best mosquito trap I've ever used. Well worth the money!!!
