A Homemade Mosquito Trap that Really Works!

A homemade mosquito trap that really works! By hze1955

Homemade mosquito trap catcher

Homemade Mosquito Trap

Items needed:
1 cup of water
1/4 cup of brown sugar
1 gram of yeast
1 2-liter bottle

1. Cut the plastic bottle in half.
2. Mix brown sugar with hot water. Let cool. When cold, pour in the bottom half of the bottle.
3. Add the yeast. No need to mix. It creates carbon dioxide, which attracts mosquitoes.
4. Place the funnel part, upside down, into the other half of the bottle, taping them together if desired.
5. Wrap the bottle with something black, leaving the top uncovered, and place it outside in an area away from your normal gathering area. (Mosquitoes are also drawn to the color black.)

Change the solution every 2 weeks for continuous control.

If you don’t like making things or can’t get this thing to work correctly for some strange reason, then you can always try one of these that are guaranteed to work.

DIY Mosquito Catcher that WORKS!

About M.D. Creekmore

M.D. Creekmore is the owner and editor of TheSurvivalistBlog.net. He is the author of four prepper related books and is regarded as one of the nations top survival and emergency preparedness experts. Read more about him here.


  1. thats Awesome. Thanks hze.

    • I TRIED IT the pop bottle and yeast thing CAUGHT 1 FLY YEH ! I also have the big squiter vac from can tire that usually did the trick for the the last 4 years but this year i just cant keep up to them next im tring the big quare fan with the box screen behind it that seems like a smart one its on you tube .

    • John Evjen says:

      I believe that I have read at least 200 comments about this type of soda bottle mosquito trap. I have NOT FOUND A SINGLE ONE THAT SAYS THAT IT WORKS.

    • It DOES NOT WORK!!!!!!!! I tried it more than once and it was a big waste of time!!!!!!!!!!!!!

  2. I’ll have to try this. Usually I just use The Boss, skeeters are drawn to her for some reason and leave me alone. Must be all the garlic and hot sauce I eat, though she claims it’s because I’m full of uncomposted manure….lol.

  3. Mother Earth says:

    I like this suggestion…using stuff I have around the house to repel mosquito’s. thanks

  4. This looks so cool! But how do you keep it from becoming a mosquito incubator?

    • that’s why they say to check it every two weeks. it’s best just to replace the trap every two weeks anyways.

  5. I love that old song….sang to the tune of “If You’re Happy and You Know It” There are more verses, but you’ll have to go look them 🙂

    There’s a skeeter on my peter flick it off
    There’s a skeeter on my peter flick it off
    There’s another on my brother and a dozen on my cousin
    There’s a skeeter on my peter flick it off!!

    • I heard it as,

      There’s a skeeter on my peter, whack it off!
      There’s a skeeter on my peter, whack it off!
      There’s a dozen on my cousin you can hear em all buzzin!
      There’s a skeeter on my peter, whack it off!

  6. I’ve never understood people who put a bug trap or any type out near where they are having a picnic or the like. It draws bugs to it and, therefore, to where you are. Better to make several of these and give them to the neighbors who surround your house. Make your house an island in a surrounding sea of traps.

    • Ridiculous. Mosquitoes are already attracted to your picnic due to the CO2 you exhale. Where else would you put a trap?

  7. I live where the mosquito is the state bird. I will try your trap to see how effective it is, and let you know how it works..I am thinking I may need to set several around my house.

    • Encourager says:

      Thanks for the great idea, hze1955! I would think these would be set up like Japanese Beetle traps – far away from what you are trying to protect. I can see putting these a good 500 feet or more away from the house.

      Why can’t the skitters just fly back up the funnel? Is there something in the water that kills them?

      • The carbon dioxide created by the yeast kills them I imagine. Just like all living creatures, they breathe oxygen.

      • anonymous says:

        the mosquitoes are too stupid to fly up the tiny hole they came in

    • You must living in Alaska! Record mosquito population this year.

      • Most counties in New Jersey have a mosquito extermination commission (that don’t do anything but pollute our water ways with gallons of pesticides paid for by your taxes). Since they’re publicly funded, you’re entitled to their services

  8. michael c says:

    You could pair that with a bug zapper for night time use – just hang it under the zapper.

  9. I will definitely try this and let you know.

  10. Nancy V. says:

    I am going to make one right away. Spring is beginning to blossom and they are talking about a hot summer in my region – so the blasted skeeters will be out and about. Well done!

    • Encourager says:

      They have already hatched in lower Michigan. But we will have freezing temps the next few days and it is snowing a bit now. Hopefully, THOSE LITTLE BUGGERS WILL ALL DIE!!!!!!

      Whew…sorry…at least I got that out of my system… We are surrounded by ‘wetlands’ (that is the politically correct term for swamps) so we get at least 50 different varieties here, from big enough to almost carry you off to teensy ones that you never feel bite until an hour later and you are scratching your skin off. I hate mosquitoes.

      • tommyboy says:

        Actually, a swamp is a “type” of wetland characterized by trees, much like a “marsh” would be a type of wetland characterized by emergent vegetation like cattails. Nobody told you to set up shop next to a wetland… they’re vital components of a functional ecosystem. Draining them for development is a primary reason our water quality has gone in the dumper.

        That said, cool trap. I just made four and will be placing a couple near the “wetland” next to my house.

        • Joan Miller says:

          Not everyone gets to choose where to live. Some of us are born next to the “swamp.”

  11. I tried one a couple of weeks ago, DH is a skeeter magnet. It could be freezing outside, and if there is a live skeeter within 25 miles, it comes to snack on him. Wasn’t very happy with the results, but I didn’t use that much sugar. Supposed to catch flies too. I think I will try the pin I saw on Pintrest about spraying pine sol around to keep bugs away from the kennels and the house next.

    • Angela Cole says:

      Shai, I would be concerned with using Pine-sol to keep bugs away. On a medical mission in South America we used pine sol to clean the bathrooms. In the morning we had more bugs than we could count. We literally had to shovel them out of the bath rooms. There are essential oils that may work better to keep the bug populations at bay. Also more pet friendly substances that have fewer ingredients in them. Good luck. As the mosquitos are taking over due to all of the rain we have had this spring, I am going to make one of these traps in the morning. I hope they work.

    • Ha my sons name is Shia.. almost the same.

  12. MorePooperThanPrepper says:

    Has anybody tried out a doodad like this in the water as a minnow trap? Ive read about them and even built and tried them but with NO success. I was hoping someone could give me pointers to how to get it producing.

    I would love to have something like this collecting protein while entirely unattended. While the idea of eating dried salted minnows doesn’t bother me much at all, I think I might prefer to go without protein than to eat soggy dead mosquitos with who knows who’s blood in them.

    And before someone jumps on me, yes I do know the author did not mean for this to be a food source. I’m just brainstorming here.

    • Encourager says:


    • Survivor says:

      We have several fish traps made with chicken wire and some made with 1/4″ welded wire. One of them is in the shape of a 4 leaf clover and is a fish catching son of gun. The top and bottom are 2′ square. They’re separated by four 1′ long, “C” shaped squares 15″ wide. What I mean is cut out the square and then form a “C” with it, Stand the four “C” shapes on the bottom piece in such a manner as to leave a gap between them as wide as the fish you want to catch…in your case about 1/2″, give or take. Attach the “C” shapes to the bottom. You can trim it up if you want, we didn’t. Then take a little bit of wire and make a cylinder with one end closed, about 3 inches long and maybe 2″ wide and hook it to the top square. Attach two of the “C” shapes to the top square so that the cylinder is inside the trap. Only two so you can reach the cylinder and put in bait.I know you’re busy, MD, but would you mind if I send you a picture and foreward it to MPTP?

      • Post the picture!

      • MorePooperThanPrepper says:

        Thanks for this. On fourth read I think I figgured it out. Your description was great I’m just not great at turning words into pictures. I’m guessing ths is what I should really make. What has worked for you for the bait ?

        My original question really was about a 2 litre bottle trap nearly identicle to this mosquito one. Some kids on instructables swore it worked. I tried it for 2 days at the lake and had nothing to show from it. I’ll give your design a try. Thanks again.

      • We live on a lake and fish all the time. Would like to catch our bait and not have to buy it. Would like to have a photo and directions to build the fish trap.

  13. I used to have one similar to this which used propane to create the CO2. This one may be a bit cheaper to operate. The theory sounds good, so perhaps it’s time to try one.

  14. What a great idea, I will put this out in the pasture area where the livestock are.

  15. I built one of these a couple of years ago to catch mosquitoes. I didn’t catch those but caught hundreds of flies. The flies cannot find the way back out of the funnel top. I tried again another year and only caught a few flies.

    • MorePooperThanPrepper says:

      I don’t know a lot about fly trapping, but my grandmother used to give me a few pointers that might help out. Were you using vinegar? or Honey?

      I wasn’t ever really sure why she wanted to trap all those buggers, or why she was always telling me that. I would be reminding her what a batty old crone she was, and up she’d start with the fly catching again…

  16. Mosquitos cannot see color. They are attracted to heat, carbon dioxide, and movement from those sources. Black is simply holding heat longer than light colored objects which tend to reflect heat. Only the females bite. The blood is used for protein to produce and lay eggs. Male and females feed on sweet nectar for food.

  17. I am getting ready for bed and have been intermittently been bothered by a lone mosquito throughout the evening. I keep missing it when it lands. I got fed up and thought I’d give this a try. I was in the process of dissolving the sugar in water and taping up my bottle, when the dog twitched his ear and snapped his jaw shut. GOT HIM! Good boy! I’ll put the trap out on the table just in case there are any more in the house I didn’t notice.

  18. I love the idea, and am definitely going to try it. I would like to know two things though:
    1. What around the house can I substitute/use as yeast and or where can I get rising yeast?
    2. Can I do this exact mixture to catch flies and gnats or are there a few differences such as using vinegar, dish-washer liquid and or honey?

  19. The Old Coach says:

    We have another natural solution here in my part of Ohio – barn swallows. No flying insect stands a chance against those little airborne skeeter-eaters. I’ve been here four years and have never seen a mosquito. But in my old haunt in Michigan I sure could have used this idea. I bought one of those expensive Mosquito Magnets, but it never did a thing. Might get 15 or 20 skeeters in a week, which was 0.00000001% of the population in my yard! This thing looks like it works!

    • Patrick says:

      +1 for swallows! I grew up on a farm and loved to watch them fly. No barns where I am now, alas. We have a few bats in the area, but not nearly enough to control the insect population. (Or, maybe we do — I’d probably not be happy with the number of insects we’d have without the bats.)

    • I grew up on a farm as well and love watching the barn swallow catch insects, especially in the evenings. So cool to watch. Wish I had a camera back in the 60s.

  20. Does anyone know if this works with biting flies (black flies,deer flies, etc)?

  21. Sorry, I’m a skeptic. If this worked someone would be selling at Walmart!

    • They do sell it at Wal-Mart and Tractor Supply…..but it’s a trap for flies. I’ve been buying them for a couple years now and they catch hundreds of flies and keep them off my porch and away from me and my dogs. They cost about 4.99 each and I just bought one today. I just tried this mosquito trap and basically it’s the same design except I’m not sure what is already in the fly traps I’m buying, it’s something that dissolves and does not smell very nice. We’ll see!

  22. Brandi says:

    I don’t understand how it works….someone explain it to me. Why can’t they just fly right back out?

    • The mosquitoes can fly right back out through the small bottle top opening that they came in through, except few ever get back to the small opening once they are inside; once inside and find nothing to land on, their inclination is to fly elsewhere, and most likely they will fly towards the outside wall, then encountering a solid surface they usually work their way up into the crevice where the inverted top seals with the bottle. They will fly around in different areas, but few ever get back aligned with the small opening they came in initially, then continue up and out of the bottle. Besides, they are still (supposedly) drawn toward the CO2 the yeast is producing, which leads them down into the funnel area, and back into the same trap.

      Some are concerned that mosquitoes will breed inside the bottle, but the mixture is not suitable to lay eggs in (alcohol produced by the sugar-yeast), and the mosquitoes that are attracted to the CO2 are looking for protein (blood) so they can produce eggs; most likely they are ready to lay eggs at this stage of their life.

      The theory is that eventually, the trapped insects die and fall into the sugar-water-yeast. After a time when the yeast and sugar have expired, the alcohol will evaporate, eventually making the mixture lose its effectiveness; still, not likely a draw for breeding mosquitoes.

      The fly traps sold in stores (mentioned in other posts) work on the same trapping principle, that the opening is lower than the crevices around the sides. The insect instinct is to travel up the sides, never seeming to find the original entrance. The insect attraction for the store-bought insect traps is a disgusting smell, like rotting food. You could use anything that has a similar attraction, such as decaying fruit. The trouble is that you still have the decaying fruit to dispose of. The advantage of the store bought version is that it is a liquid, which is easier to flush and dispose of. Their secret is more what they are using to attract the flies. If anyone knows the ingredients, please post, because this would be a cheaper alternative.

      The mosquito trap depends on the sugar mixed with yeast to get the CO2. The problem is that this contraption does not seem to be very efficient in my own experience, so results can vary. It will not likely work well enough to make a significant difference.

      Many say they will report back with their findings, but you never see many good results. Most likely it will not work very well anyplace where Internet access is available. The theory is believable, but don’t expect phenomenal results, unless you have a lot of mosquitoes.

      By the way, the insects that look like giant mosquitoes are good insects because they feed on the biting ones. I never want to kill those when found trapped inside the house.

  23. I used a trap like this for fruit flies with vinegar in it and it really works for them. Probably for flies as well. We used it as an inside trap.

    Make sure you don’t heat the water too hot with the yeast – it should be between 105 and 110 degrees to not kill the yeast yet let it bloom.

  24. Derrick says:

    The yeast feeds on the sugar in the water. As it feeds it produces c02 which Mosquitos are attracted to. Mosquitos just fly around, they don’t have a good enough sense of direction to fly down to the cap opening and up and out. I make these every year. Works awesome

    • You are the only person I have seen so far who says this actually works. I’m going to try it anyway, but I wanted to know if you do anything extra or if you follow the directions exactly as they are here. How far away do you place yours from your house (or wherever you are set up)? Do you actually see the mosquitos that you catch? I really hope this works for me. 🙂

  25. didn’t catch a single mosquito with three traps in an infested area.

  26. Tried this, it didn’t work. Didn’t even get one bug.

  27. I Tried this and had it out for several days now, and nothing, We are in an area that has tons of bird sized mosquitoes, every time I go out the door I am surrounded by them but they are not going into the trap.

  28. SNOOPTYDOOP says:

    I hope this works here. I have a 40×400 pond about 75 feet behind my house. I looked out the day before yesterday and for as far as I could see down the length of the pond and for about two feet above the water, there were millions, at least gazillions of mosquitos flying about. The pont is stocked. What were thos darned fish doing instead of eating the larva? Tomorrow we shall see…..

  29. jamie ball says:

    all these comments and not one of saying if they actually work…hmmm..lol..well we are going to make one (actually in the process of making one now) and we will let you all know how it works…we live in upper michigan and those lil blood suckers are EVERYWHERE…oo me being from tennessee and i hate em…didnt think they would be so bad up here but they are..will post results later 🙂

  30. This doesn’t work. I tried it and nothing happened. I just wasted $5 on a jar of yeast.

  31. Disappointed says:

    It didn’t work for me. I placed the trap out over a week ago, and the only thing I’ve caught so far are smaller ground bugs (that were probably attracted to the sugar and fell in). There are plenty of mosquitoes in the area I placed the trap (I have the bites to prove it), but not a single one has gone in the trap. Pretty disappointing.

  32. jamie ball says:

    that thing dont a bit more work than anything…sounded all good but it aint worth a sh**…..now you know!

    • Thanks for doing the work Jamie! I, too, live in the UP and am looking for something to attract those gnats and black flies.

  33. I live in a crowded suburban area, but between two large parks, so we are often visited by four legged critters ranging in size from chipmunks to deer. Our latest late night guest spotted was a fox. Mosquitoes find me quite tasty, so I was eager to give this a try. I put three of these traps out, and they seemed to be working, but rain was a bit of a problem. The liquid inside came right up to the opening. The day I decided siphoning a bit of the liquid off might solve the problem, I found all three had been knocked over and opened. Not sure what got into them! I just hope the recent rain has dispersed the spilt solution enough that it is not still drawing insects! I’ll give these traps another go using duct tape, which I hope will prove sturdy enough to stand up to whatever critter found the contents yummy enough to go in search of all three! Wish me luck!

  34. PartyBargeCapt says:

    Buy a bat house. Bats feed on mosquitos while they are out at night. One bat house covers an area about an acre in size. You can probably find plans to make one free on the internet.

    • Bats don’t eat enough mosquitoes for it to matter. We have a bat colony living under our soffit (sp?) and there are still a zillion little bastard mosquitoes in our yard. Sometimes the bats come in the house- that’s a ton of fun. I’d rather deal with mosquito bites than bats. But maybe that’s just me.

      • Don’t know what kind of bats you have, but ours annihilate the mosquitoes in our backyard. I def prefer bats to mosquito bites. Our bats don’t bother us and we can sit outside all night and not get bit. We have a pool, so there is always stagnant water somewhere.

        • Actually, bats in the house can be a big issue…


          “In all instances of potential human exposures involving bats, the bat in question should be safely collected, if possible, and submitted for rabies diagnosis. Rabies postexposure prophylaxis is recommended for all persons with bite, scratch, or mucous membrane exposure to a bat, unless the bat is available for testing and is negative for evidence of rabies.

          “Postexposure prophylaxis should be considered when direct contact between a human and a bat has occurred, unless the exposed person can be certain a bite, scratch, or mucous membrane exposure did not occur.

          “In instances in which a bat is found indoors and there is no history of bat-human contact, the likely effectiveness of postexposure prophylaxis must be balanced against the low risk such exposures appear to present. Postexposure prophylaxis can be considered for persons who were in the same room as a bat and who might be unaware that a bite or direct contact had occurred (e.g., a sleeping person awakens to find a bat in the room or an adult witnesses a bat in the room with a previously unattended child, mentally disabled person, or intoxicated person) and rabies cannot be ruled out by testing the bat. ”

  35. laurie woods says:

    this sounded so good to me I made 10 of them. They didnt catch sh#t but after a few days the next door neighbors dog started carrying them around!! The ones that survived this attack are still there…catching nothing. I live in mosquito hell in michigan’s thumb on 5 acres of swamp. Didnt catch even a gnat! Thank goodness for my abundance of swifts and bats and my huge zapper!

  36. I hope this works, I’m going to give it a try. If anyone has any suggestions about what time of season is best to put this up, please feel free to add.

  37. if i dont have yeast to make the recipe what can i replace the yeast with???

  38. Didn’t catch any Mosquitos. But made a damn tastey Homebrew:)

  39. Nanooky North says:

    Anybody actually tried this? We did – didn’t work. Suggestions anyone??

  40. is it ok if i use this for my investigatory project in science?>>>>!.. ! pls.. answer..! 😀

  41. Put 1 Cup of vinegar and one cup of sugar in a empty 2 liter bottle. Add one or two banana peels. Fill half way with water. I put two holes in the neck of the bottle and run a piece of rope through it, tie a knot in the rope……and hang it on a tree limb about 30 feet from the house to draw bugs there. I make several. At the end of the summer there was a three inch layer of dead bugs. It will kill anything that flies. I hate to kill bees and things…….but I’m allergic to insect stings. :{

  42. I tried this; worked but not great; had better luck with the other one using regular sugar, yeast and more water. There are many variations out there, best bet is to try and see what works best for you

  43. Bubba Einstein says:

    So far after one night. Nothing.

  44. I’ve tried this 4 separate times, I live in a mosquito infested area, not one mosquito caught!

  45. How far away from gathering site is ideal?

  46. had high hopes. caught nothing in these traps.

  47. Steven of Gainesville, FL says:

    I have been trying this for the past week, using three bottles. I caught about three mosquitos, one large beetle, and many small ants. I had very high hopes of this working…but unsuccessful!

  48. nea speaks says:

    I’ve tried these things without much luck and then I ended up buying a Skeeterbag. It’s only $20 and you use it with a cheap box fan. It kills tons of mosquitoes. So simple and so effective. Skeeterbag.com

  49. Doesn’t work at all 🙁

  50. Roadhunter says:

    FAIL! This trap works great on fruit flies, house flies, and moths, but not on mosquitoes. I put two out yesterday afternoon amid a cloud of Asian Tiger Mosquitoes, and caught exactly ZERO in 12 hours.

  51. It works. It TRUELY does. There are many others but THIS is the one.

  52. It worked on flies and only got 1 mosquito.

  53. Kathleen says:

    After 2 weeks, the trap caught one mosquito and about 100 fruit flies. Now, after rains, the mosquitoes are out if full force. Sucker that I am, I’m trying the trap one more time.

  54. Did not think it was working at first but behold, there were dead skitters floating…alrighty then!!

  55. mosquito man says:

    I do not know how well this works, but for people that have tried this for only a day or two, the yeast takes time to ferment. It is the fermentation of the yeast that releases the CO2. Temperature and humidity will effect the time and amount.

  56. Just did this yesterday. The mosquito population is really bad this year. Unfortunately, after being out for 24 hours, just caught 1 fly. This doesn’t work at all. Although mosquitoes may be attracted to the CO2, they do not fly into the contraption.

  57. I can also attest to the fact that this DOES NOT work. Did the traps exactly per the instructions above, had them out for a week and hasn’t caught a single mosquito. There are few bugs in there, but no Mosquitos. Don’t waste your time folks.

Before commenting, please read my Comments Policy - thanks!