At best, mosquitoes can be a real nuisance, leaving itching bite marks and keeping us awake at night. The irritation caused by the bites can be quite distressing particularly for children. At worst, mosquitoes transmit a range potentially fatal diseases. In India, the most prominent diseases spread by mosquitoes are malaria, dengue and Chikungunya as well as Japanese B encephalitis. The risk of mosquito-borne diseases is especially high in humid areas. In the more arid regions of India, mosquito infestation commonly peaks during and after the annual monsoon rainfalls. In the more tropic and humid regions, the peak of mosquito activity normally falls into the summers when high temperatures fasten the reproductive cycle of mosquitoes.