Quick and effective mosquito trap.
All you need is a 2l bottle.
Cut off the top and glue or tape the piece together, then fill with 1 cup of water mixed with half packet of yeast and ½ sugar. The mosquitos are drawn to CO2 which we exhale and since yeast produces CO2 they will go in the bottle and no be able to escape.
Haven't tried this myself but I think a couple of these painted and decorated will look great around the swimming pool.