No vaccine is available that provides protection against West Nile virus. Avoid turning on lights inside the stable during the evening and overnight. Mosquitoes are attracted to incandescent bulbs. Fluorescent lights neither attract nor repel mosquitoes. Place incandescent bulbs about 50 yards from the stable to attract mosquitoes away from the horses.
Black lights are of little value as attractants for mosquitoes.
Prohibit pigeons and other birds from roosting and living in or near the stables. Periodically examine the property for dead birds such as crows. Handle dead birds only if wearing protective gloves, and place birds in plastic bags. Carefully examine your property and eliminate locations that could serve as breeding grounds for mosquitoes. Shallow stagnant or standing water, used tires, and manure storage pits are ideal places for mosquitoes to breed.