Although we have touched on the subject before itis important to bring the matter up again. The government is forecasting a very bad year for mosquitoes and the spread of the West Nile Disease. For those of you who are unaware several people and horses died last year from becoming infected with the disease. The disease is borne by mosquitoes. That is the bad news.
The good news is a simple effective solution is the placement of bat houses in appropriate places on your properties. Bats have an enormous capacity for consuming insets nocturnal animal; the bat eats when the insects are out, in contrast to birds, which eat during the day. Some bat species consume half their weight in a night. -- As many as 600 or more gnat-sized insects an hour.
A single brown bat, one of the most abundant and widespread bats in North America, can eat 3,000 to 7,000 mosquitoes each night and a bat can live up to 20 years. That is a very, very effective natural insecticide.