When I turn off the lights occasionally, I have heard it burning mainly mosquitoes because I clean it and see them stuck. Good for its price. Note that it is impossible to do the job on its own in a 110sqm maisonette. It needs further device.

I bought three devices and scattered them throughout the house. So far, I have been satisfied since I don't like devices with tablets and insect repellent liquid. The truth is, I never had a particular problem with mosquitoes, but it exterminates the few that exist.

Very intense blue light, not even a mosquito was killed while it was on for 24 hours near a window. The mosquitoes were flying carelessly all night.

My mom caught it with her hand as she was about to turn on the lights and I heard a ZZZT!
She shook it a little hahaha (it's harmless)
I laughed so hard hahahaahahaahahaahahaaha
I've heard it hit mosquitoes a couple of times though, it does something, it's fun!
BUT PSST, BE CAREFUL:
If you have open windows, mosquitoes come from outside - towards the light that attracts them.... be careful and don't catch it one night and ZZZT! Hahahaahaha!

They gave it to me as a gift, I would never believe that something like this works effectively, and indeed it doesn't...
However, I can say that in the 4 nights that I tried it, it killed 1-2 mosquitoes. Just don't expect that by using this tool you will get rid of mosquitoes. For me, it's not worth the trouble, and I don't trust leaving Chinese plastic devices of questionable quality plugged in for many hours. I returned it :)

For its price, it is very good. I bought it from a vendor on the street for 5 euros. I removed the blue protective plastic from the front and it didn't leave any live flies or mosquitoes. It works 24/7 in a store and it has saved me. It doesn't kill flies as long as I have it, so I give it 4 stars. With a watt consumption and around 5 dead mosquitoes every 3-5 days, I think it's worth its money and more.