Ok, it is everywhere on the web so I post “recipe” This also.

This is needed:
1 cup water
1/4 cup brown sugar
1 grams yeast
1 2-liter PET bottle

1. Share plastic bottle in half.
2. Mix brown sugar with hot water. Allow to cool and then pour the solution into the bottom half of the bottle.
3. Add the yeast. You do not mix. The yeast creates carbon dioxide, which attracts mosquitoes.
4. Place the funnel part, top of the bottle, up and down in the other half of the bottle. Tejpas s IHOP.
5. Paint or dressing bottle bottom with a black (Mosquitoes are also attracted to the color black)
6. Ready to place out / hang up

Replace solution with 1-2 weeks