Mosquito trap DIY 8,000 mosquito kill reduce ZIKA DENGUE MALARIA MaxxAir Fan CO2
Why Hacker News recommends it
HN commenters point people to it as a cheap, simple, effective way to kill mosquitoes, and some report trying it successfully.
What it is
A DIY demonstration of a fan-and-screen mosquito trap that uses carbonated water as a CO2 attractant. The creator reports catching about 8,000 mosquitoes in two nights.
Recommended by 4 HN commenters across 4 different months, 2018 to 2025.
What Hacker News said
Recommends ryanseys · 2018-05 · on “Illnesses from Mosquito, Tick, and Flea Bites Increasing in the US”
Do it! I've seen videos floating around E.g. [0] that are as simple as a giant fan that sucks in mosquitoes. [0]: [this video]
Recommends rainbowzootsuit · 2022-08 · on “Scientists discover how mosquitoes can ‘sniff out’ humans”
There's a lot of tricks out there for killing mosquitoes but the window screen on a fan one is a personal favorite: [this video]
Recommends johnthedebs · 2025-07 · on “Try the Mosquito Bucket of Death”
The comments saying that other sources of water need to be removed are spot on. Another technique I've tried which works (observably) well is described in this video: [this video] tl;dw: Get a big drum fan with a screen on the back, attached with small/powerful magnets. Mosquitos are such poor flyers that they get pulled against the screen and can't escape, and they pretty quickly desiccate and die. Most other flying insects don't get caught, although there is a bit of collateral (some moths and lacewings, unfortunately). Another benefit of the fan is that you can hang out in front of it and mosquitos mostly won't bother you there either. I did this in our shared backyard space in Brooklyn and wo
Recommends al_borland · 2025-11 · on “Ask HN: Effective way to deal with mosquitoes?”
There are some YouTube videos out there where guys attach a screen (or net) to a high powered fan and catch/kill insane amount of mosquitoes. [this video]
Cites drited · 2022-01 · on “Predict 3D position of flying bugs and pest to shoot down them with a laser”
Ya I saw this Dan Rojas video linked on HN a while back when the laser mosquito idea came up. He uses an open bottle of carbonated water to attract them to the fan/screen trap [this video]