A Canadian friend posted this and they get mossies really bad. I remember not being able to see out of the fly screen they were so bad. Anyway I can't try it as there are none around at the moment so feel free to give it a try if you live up North.
HOMEMADE MOSQUITO TRAP:
Items needed:
1 cup of water
1/4 cup of brown sugar
1 gram of yeast
1 2-liter bottle
HOW:
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.
