Mosquito Trap: Cut cone from 2 liter bottle, invert and glue together. Add 1 tsp yeast, cup sugar to lukewarm water, pour into bottle. Mosquitoes are attracted to the carbon dioxide emitted from the sugar/yeast combo.
I usually do something similar to these, but use a cardboard egg carton, dryer lint & melted wax from leftover candles. patroleum jelly is a good idea. the original title: PET Balls - dryer lint and petroleum jelly - firestarters