Fly Trap

Fly Trap
Fly traps are an ancient solution to the fly problem. Surprisingly not used as much today. You have a fly problem and the usual response is to grab a can of poison. The main problem with poisons are that they kill not only the bugs you want dead, they also kill the ones you might like to keep alive, not to mention the idea of yourself or loved ones coming into contact with them.

Over the thousands of years Humankind has dealt with garbage and other wastes, they have had to deal with the biological duties of Flydom. Though flies are dirty and carriers of disease, the world would be buried in crap and carcasses if it weren't for their intervention. However, they carry disease and are really dirty, so control is an issue.

Some of the earlier controls were to take a certain poisonous mushroom and float it in milk, stinky baits with a similar funnel setup, sticky traps, and the Dog. These forms are not pragmatic for whatever reason, the dog gets full, it takes days to get the stink just right, the stink is stinky, and lack of mushrooms come to mind.

This trap is pleasant enough to keep in the house and works much better, is more efficient, than any of the other methods commonly used.
 
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Step 1Fly Behavior

Fly Behavior
Before we can defeat our enemy, we must understand his habits. Besides being attracted to feces, garbage, and unwashed individuals, flies are just plain too fast to catch. In that devious little brain lies all the factors that have kept him and his ancestors to the Nth degree in business. So to defeat him we must study him.

The easiest way to do this is to find a big pile of dog crap in the yard and watch it closely. This is a great activity for the family and friends over a few beers during a cookout. We usually cut out little fly wings for the kids and play games like "catch the fly" where one of them takes off making buzzing sounds and have all the other kids chase after them with nets. The dogs join in and it's just fun all around. Anyway, if you watch long enough you will start to see things like me, and realize that when flies get done with whatever they do there, they do two things:

1) They fly straight up.
2) They go towards the light.

See, when flies handle their sacred (Sacred to Flies. What did you think I meant?) functions in the great scheme of life, they seek out stinky dead things all over. If it happens to be in a tight place, they crawl around following the smell until they get to the spot they need to be. Getting back out is a little harder, because in an enclosed space they can't smell anything but stinky, so follow the light. Now you know why they always seem pretty stupid about realizing they can't get out THROUGH the window glass.

The other problem flies have is nobody seems to think of them as pets. Either somebody is trying to eat them, or just plain doesn't like them for some reason. Understandably, they have a real persecution complex, so over the millions of years they've been in existence have developed these paranoid responses which, noting their habits, have worked out pretty good for them.

Beyond the fact that his egress is not likely to be down and under that pile of poop, the most vulnerable time for our leetle friend is when he's taking off. Considering the shortest distance between two points is a straight line, getting airborne is simply a matter of getting there fast. Now catch him.
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73 comments
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Feb 2, 2012. 11:42 AMatlantica says:
"I could set out the raw hamburger, turn around and lose it in a mass of gray, green, and blue bodies. Needless to say my sex life suffered."

You were having sex with raw hamburger? eeww.. this is a family site.
Jan 18, 2012. 6:53 AMchuckr44 says:
This trap will work for several species of flying pests.
- Fruit flies like sugar water (soda or fruit juice)
- Yellow jackets like sugary things in early summer, protein (rotten meat) in late summer.
- House flies prefer, well, any rotten food.
- I wish I could catch horse flies and deer flies, but they prefer live animals.
Oct 20, 2010. 1:36 PMjsangiuliano says:
Or you can buy Phermone at Walmart.
Jan 18, 2012. 6:51 AMchuckr44 says:
There are no pheromones for house flies, but they have pheromones for yellow jackets, a type of wasp, and Japanese beetles.
Sep 9, 2011. 10:09 AMtrunx says:
This is not an instructable for a fly trap. It's an essay about your experiences with flies, some side commentary, a bunch of vaguely described models at the end and two confusing diagrams...
Apr 15, 2011. 2:32 PMlumpee says:
I can't understand how you overlooked duct tape in your list of materials.After all,doesn't it work for everything? Just sayin' :)
Oct 7, 2010. 11:02 AMbodie says:
My trouble was with fruit flies, so I made a couple of small changes. I used a plastic water bottle and cut off the top of the bottle and inverted it. This made its own funnel. Then I attached the whole assembly to a small rectangular plastic baby food container. This made the whole assembly small enough that I could sit it on the window sill and my wife didn't mind it.

I colored the outside of the baby food container with a black sharpie and I used a blackberry to bait the fruit flies. I also found that a slit was too big of an opening, and the flies flew back out of it. Instead, pushing the tip of a ball-point pen through the side of the container made the opening just right. I caught HUNDREDS of flies with this thing.  Great 'ible.
Jul 21, 2010. 5:21 PMshveet says:
if they fly straight up... then why do they fly around my head?
Jun 29, 2010. 1:29 PMRetroTechno says:
5 stars for not only being really inventive, but also really well written. With the 4th of July holiday coming up, maybe I will make one of these to entertain my friends at our cookout. Muhahaha! Coming to the comments late, I don't know what sabarblatoe wrote, but I'm guessing that he/she couldn't read the text in that big pink box below the commenting area about being nice.
Jun 29, 2010. 11:04 AMNicholai says:
you could add honey tothe inside of the jar to make even more flies want it and come in and then laugh at their feeble attempts at escape muah-hua-ha--ha-ha
Jun 28, 2010. 3:40 PMmandibug0218 says:
Just made my first miniature fly trap .. Hoping it helps with this sudden invasion. Thanks for the instructable.
Jun 28, 2010. 2:11 PMgoobyalus says:
We always just took an empty soda bottle, cut the funnel-shaped top off, inverted it, and taped it on. If the leftover soda wasn't enough bait, we added something sugary. Flies would go down the funnel and not figure out how to get out. This seems a little complicated for a fly problem.
Nov 29, 2009. 4:11 AMJoe22c says:
haha, I appreciate your subtle sense of humour throughout the guide:

"[poisons] kill not only the bugs you want dead, they also kill the ones you might like to keep alive, not to mention the idea of yourself or loved ones coming into contact with them."
Jun 30, 2009. 6:17 AMtheyoweusaliving says:
Yesss. Finally some justice to this method of fly catching, been using this (or a very similar setup) for years and it has never failed me. One point of advice from personal experience by the way is that if you're dealing strictly with a fruitfly invasion in your house rather than with full size house flies, you can simply wrap a piece of paper into a funnel shape with the widest portion slightly larger than the mouth of a glass. Drop something sweet that can rot in the bottom of the glass, drop the funnel over top and make sure there's no clearance between the mouth of the glass and the funnel. That alone will be enough to take care of your whole fruitfly problem I've discovered. ...They are significantly less intelligent than most insects you will deal with. Added bonus is you can take them all outside when it starts filling up and let them go without killing them if you refrain from doing such things for any reason.
Sep 8, 2009. 3:13 PMbitterbug says:
Fastest way I've found to kill fruit flies is vinegar and soap in a glass. Leave overnight and harvest all the little corpses the next morning.
Jul 8, 2009. 7:51 AMdeusexmachina says:
I Love the instructable. I Love the GIF even more. Wow, I've heard of army ants, but this is the first time I've encountered a guerrilla fly. B)
Jul 7, 2009. 4:02 PMJavin007 says:
LMAO! Okay, I gave you 5 stars for the ending gif alone.
Jul 6, 2009. 1:52 PMracecitync says:
They aren't that difficult to catch by hand...maybe I'll do an instructable! lol
Jul 3, 2009. 11:53 AMMillenniumMan says:
There is a commercial product exactly like this called Flies-Away. It's one of the last ADs that Billy Mays did, maybey a couple months ago.
http://www.asseenontvguys.com/index.asp?PageAction=VIEWPROD&ProdID=857

Good to know that someone's patented a three-thousand year old idea and claimed it all for himself.
Jun 29, 2009. 12:19 PMarirang777 says:
OMG! I didn't know about the rambo fly you were able to spot. Maybe a new species developing around nuclear plants. One question, Cptn: Will you get only flies or also some other flying insects like bees, lady bugs, lacewings. wasps, etc. My neighbour got some traditional nectar traps but they caught EVERYTHING, so for the last few years we had have terrible infestations of aphids in everything with sap/green. I want to evict flies, not the good guys. Thanks!
Jun 30, 2009. 12:19 AMwazzup105 says:
. Neither sleet, nor rain, nor gloom of stormy night shall stay these disease ridden and filthy couriers from the swift completion of their appointed rounds.

poetry !

(I admit I bought a commercial fly trap but boy does it deliver.. Yesterday it was so full, flies were lining up outside waiting for to get in. If you think 1 fly is scary, wait till you have to remove a cup of dead flies from the device.)
Jul 1, 2009. 3:16 AMjimyb5 says:
Looks like a bird I was with last weekend...
Jul 1, 2009. 2:25 AMmiiwii3 says:
this is great if you own horses! like me and my friend.
Jun 30, 2009. 9:05 PMRA_1234 says:
What was used for bait?
Jun 29, 2009. 6:54 PMlemminggenocide says:
Before we can defeat our enemy, we must understand his habits. Besides "being attracted to feces, garbage, and unwashed individuals, flies are just plain too fast to catch. In that devious little brain lies all the factors that have kept him and his ancestors to the Nth degree in business. So to defeat him we must study him. The easiest way to do this is to find a big pile of dog crap in the yard and watch it closely" hahahahahahahahahahahaha! Every time I read this, I imagine that it is being said by an old english man, and I can't stop laughing.
Jun 29, 2009. 4:34 PMLintballoon says:
Yes, wicked cool picture!
May 23, 2009. 5:15 PMSkaterp1 says:
I didn't know flies had teeth.
May 10, 2009. 5:11 AMvv00dy says:
Good and simple. I like it. I think I'll catch and release spiders into mine. Yes I have a name for my fly trap, I call it the Octagon.
Feb 18, 2009. 9:11 PMdodo91 says:
GROSS picture, but COOL at the same time! =b
Jan 29, 2009. 1:16 PMRedneckAsian says:
about the flies mouth:O_o
Sep 7, 2007. 12:55 PMoldpunk666 says:
wickedness. i have something similar for wasps. might the smarter flies escape though? and breed a new race of highly intelligent superflies? hehe
Jun 20, 2008. 1:42 AMDesignerUserName says:
Like Jeff Goldblum?
Jan 21, 2009. 5:03 PMegriff says:
ahhh Brundle fly!
Dec 28, 2008. 6:56 PMtheophilus says:
apparently if you take a fly trap and turn it upside-down, it becomes a bee/wasp trap... go figure!
Nov 19, 2008. 4:03 AMmh!ne22 says:
it was so great..
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Author:CapnChkn