Be sure to change the water once a day to keep it clean and to prevent mosquitoes from breeding in it.
Each application will prevent mosquito breeding for 150 days.
The barrels are closed, except for a vent cap at the top, to prevent mosquitoes breeding.
Nets surrounded each bed - to try to prevent mosquito bites that can lead to malaria.
The louvred glass slats were open but a fine mesh prevented mosquitoes entering the room.
There are other products advertised as mosquito repellents that do not effectively prevent mosquito bites.
To prevent mosquito bites, wear long sleeves, long pants, hats and shoes (rather than sandals).
Surrounding it are the remains of the Sacred Lake, drained in the 1920s to prevent mosquitoes from breeding in the stagnant water.
The easiest and best way to avoid WNV is to prevent mosquito bites:
They advocated less drastic measures like preventing mosquitoes through modifying and preserving wetlands and removing breeding areas near homes.