Desert might not be a good place to live, but it has many beautiful sceneries. It's actually a mosquito. If I remember correctly, the mosquito it self is not the root of the problem, but it caries the virus(?) from rats that live close by. So in order to fight the disease, they also kill the rats that are close to villages and houses. They also kill the mosquitos but I don't know which one is more effective.

Thanks for your comment.