Mosquitoes are one of the most common pest problems in Hong Kong. Due to the rainfall levels and high humidity in summer, it provides for an ideal breeding environment for mosquitoes. They generally lay their eggs on or near the water surface and become adults within a very short period of time. Meanwhile, mosquito larvae, also known as wrigglers, can breed and develop in any object and structure where standing water can occur, e.g. nullahs, manholes, tarpaulin covers, plant pots and air conditioner drip trays.
It is only the female mosquito that bites. Adult mosquitoes are attracted to the carbon dioxide, heat and body odor emitted by humans and animals. The female needs blood to develop her eggs. Their bites not only cause itching and/or swelling but can also transmits diseases such as Malaria, Dengue fever, Japanese encephalitis and Zika virus.