My personal favorite and eco friendly option is to re-use a soda two-liter bottle. Stick a couple around the yard- they work. Well. My kids actually argue over who gets to make the mosquito traps we put out the day before we are planning to have folks over.
Cut off the top about 1/3 the way down the bottle, flip it and place inside the bottle to form a funnel into the remainder of the bottle. Attach with tape.
Make a solution of 1/4 cup brown sugar in two cups warm water, allow to come to room temperature, and then toss in a packet of yeast. Pour the mess into the bottle via the funnel.
Sugar and yeast make CO2 for long periods. Mosquitoes hunt by CO2. They follow the Co2 down the funnel, and then cannot get back out. Kills THOUSANDS of mosquitoes a day, give it a try. If you want, skip making sugar water and just use some of the soda, or best possible- use the half bottle of soda the kids left out on the counter.
Eco-friendly, Non-toxic, Can be made by anyone.. and essentially Free, to boot! I get that your project is directed at people that have.. ummm... much more money than need... "Skymall" sells this kind of thing. I just don't see how the poverty-stricken folk are going to buy something that costs $100+ per room and provides less than 100% protection, like netting does. It's cute, but how practical is this for the poverty-stricken folk of Brazil this is aimed at?
I'll take a look at your project... Take a minute and take a look at mine, if you would:http://www.indiegogo.com/projects/the-bishop-valve-intelligent-residential-gas-safety-valve/x/2548500
I remember an addage from Spanish class in High School: ""En Boca Cerrada, No Entra Moscas.."
Longer term, the best solution is treating the area's standing water with a culture of Bacillus Thuringiensis Israelii- it's a bacteria which is predatory on the nymphs of the mosquito. Very effective, safe, and cheap. http://en.wikipedia.org/wiki/Bacillus_thuringiensis
I have a half dozen "pucks" of retail-sold culture, waiting for the warmer weather to toss into the swampy spot behind my fence.. without BTI, it's moquito heaven. With BTI, even my neighbors comment on how many fewer mosquitoes are around.
BTI was used after Katrina in the New Orleans area to treat swimming pools which had become nothing more than bug farms after they were abandoned.. the military and department of the interior both have programs implementing BTI as a disease control measure in the works.http://www.summitchemical.com/mosquito/mosquito-dunks
They can now be bought at Home Depot and Walmart.