Can I design a one-way trap to catch the Aedes aegytpi mosquito.   

Goal:  using existing house and septic vents that are obviously a natural "LURE" because they hang out (i believe breed) in these locations.  As also scientifically  determined by 2010 research in Puerto Rico that they hang out there. (footnote click here)   So using this fact I want to make a correct sized trap for this specific mosquito that is a one way trap that allows them to enter but not to leave....  So if one does have dengue when it flies in to lay eggs, she and her new born can not escape.    Ideally without any power, so solar power will be the second option if this static method does not work.  

Background: this location is city: LaVentana,  state: Baja California Sur, about 30 miles south of LaPaz, Mexico on the sea of cortez.   We are a desert with annual rainfall of less than 3 inches.    Right now we have not had rain in about 9 months.   and we do not have a good environment for mosquitoes to live.  Yet we have them and have had dengue outbreaks in this region.    Hence this is a man made problem.    So a possible solution is just screening off all septic and house vents.    But the problem with that is there may be a vent or crack in a tank we are not aware of and/or because this is a seasonal second home location the homeowner may not have set the home up properly for 6-9 month vacancy, and some people just do not co-operate.   so the next goal is to make a trap system that will catch and kill the vector carrying mosquito when she goes to lay her eggs at your own area. 

you can click on these for higher resolution

the open vent is below at the campground	here is the loacation of this septic vent near the bathroom in campground	on top of one of the bathrooms a roof vent, I screened this roof vent off	this is a 4 inch septic vent tube without the broken cap, the cap is removed I will insert my various debugging systems and trap testers here.	picture of broken cap and my screened off tube bend at this bend the black part I made a kind of one way screen to allow the mosquitos to fly out at dusk and not go back into the hole is the theory. you can see the old cover with a hole in it

above is the in campground I found a septic cover broken 5/12/2011,  it has a 2 inch hole.   I replaced it with a screened system as above to see if for one there are mosquitoes.   and the answer that evening is definitively yes.

you can see many mosquitos under the screen.

Here are the first evening results, about 40-50 mosquitoes trying to get out at dusk.  You can see a few on the screen itself.       

Here is the first morning results, the black part of the trap must have worked well enough because there were many mosquitoes still trying to get out but no way for them to, there were only 10-20 in there within plain view so some of the others were in the tube or made it back into the septic tank.      

can over the bottle with fork ventalation holes on the top of the plastic bottle

5/13  Here is what I put on the second morning after allowing the trapped mosquitoes to go back into the septic system, a few got away but most when they had the option of getting away from the direct sun went immediately into the septic tank again.   My new test is as pictured, I found that a 1 gallon clear plastic pickle jar fit right into the 4 inch pipe for a decent testing seal.   I took a fork and heated it and made many holes on the top of the plastic jar to see if the mosquitoes can fly through that size hole.   

The reason I am doing this is I am trying to come up with a version of a one way trap that even the poorest in the world can make for free to almost free.  so using such a bottle that would go to the garbage is a goal.   So I put a can over the top where the holes are with screen to see if they get past the fork venting.   Next I need to determine a tube diameter and length minimum that they can fly through to enter the septic system.    I may not have a lot of time for this before these die off because the campground emptied after the Semana Santa holiday 4/24 and the life of this mosquito is 1-4 weeks.

bottle with fork holes melted into it with metal can with screen duct taped on to test if the mosquito can get out of fork holes.	a bit fogged up most are flying, but you can see one right above the green label.	you can see the fork holes, heated up a fork and made the holes.	there are mosquitosbut you can not see them in the top view.	you can see the outline of some of the mosquitos. if you click it will be a side view, and you can see some flies are also breeding in the septic tank.

these are the evening shots, the holes via the fork are preventing the mosquitoes from flying out of the bottle.    So tomorrow will be the final determination if the fork holes are good enough.      in the last picture you can see some of the mosquitoes, the bottle is fogged up.  

5/14 as I had expected no mosquitoes between the plastic bottle and the can/screen so the fork holes are the correct size.    also as expected no mosquitoes in the gallon clear bottle during direct sunlight, they returned to the septic tank.  

as expected, no mosquitoes this is morning so mosquitos went back into septic vent, but other flying insects trapped	this is new test, reducers to have a small hole with 1 foot tube they have to fly through.	reducers in place on septic tank	set up in place reducers in place, and plastic viewing bottle with fork holes on the top.

what I am trying to determine is what is the minimum size hole and length of tubing for the mosquitoes to still exit the septic tank.    If in the evening there are mosquitoes in the bottle i will try the next size tube down.