Mosquitoes are male and female. Female mosquitoes must suck blood to lay eggs. It takes only 7 to 10 days for a female mosquito to to lay an egg or two thousand eggs from egg to adult. Culex mosquitoes are the most common indoor mosquitoes, known as domestic mosquitoes. They have a small appetite and are not aggressive. Aedes mosquitoes, commonly known as flower mosquitoes, are smaller than Culex mosquitoes but the most ferocious, and like to commit crimes openly in the daytime.

　　1. When are mosquitoes active?

　　There are 72 kinds of olfactory receptors on the antennae of mosquitoes. They are in groups and haunted. They are most active at 28 ~31 C. The number of olfactory receptors increases in geometric progression in June and September, respectively. June is mainly rainy, mosquitoes like water, temperature, humidity are more appropriate; after autumn, mosquitoes began to breed offspring, this period mosquitoes most crazy, but also the peak of disease transmission; high temperature days mosquitoes are also hot summer, so fewer days and more nights. Mosquitoes generally do not bite people below 17 degrees Celsius.

　　2. Who do mosquitoes bite?

　　Sweat-loving people produce odors that contain more amino acids, lactic acid and ammonia compounds, which attract mosquitoes to "buzz" around the target, to estimate the temperature, humidity and texture of the human body. Generally speaking, when adults and infants live in the same room, mosquitoes often bite their children; women tend to attract mosquitoes during menstruation, pregnancy and parturition; and the use of cosmetics, such as hair gel, facial cleanser, will increase the probability of mosquito bites.

　　3. What to do after being bitten?

　　Do not scratch after being bitten by mosquitoes. Otherwise, the exudation of tissue and lymph in the skin will swell into a blister which is not easy to fade, and even cause local infection and allergic dermatitis. Stick to not grasp, usually 10 to 15 minutes later, itching can be significantly relieved. If itching is hard to bear, you can use nail gently pressing, oral anti-allergic drugs or lotion and other external medicines to smear, you can also apply Fengyou essence, Wanjin oil and other anti-inflammatory, anti-itching, or garlic, soap dip in water to smear, you can also use chlorpheniramine or aspirin 1 piece, cold boiled water into paste to smear bite. However, pregnant women or the skin around the eyes, nostrils, lips, vulva, anus and other parts, as well as near the junction with mucosa, should not be used at will, such as swelling, infiltration, ulceration, should not be self-medication, must see a doctor in time.

　　4. How to repel mosquitoes and kill mosquitoes?

　　First, remove all kinds of accumulated water, domestic waste should be cleaned up at any time, keep the indoor environment clean and tidy, pay attention to shutting screen windows and screen doors, do not give mosquitoes living space.

　　Secondly, mosquitoes often place sugar water or beer in empty wine bottles in the corner of the wall. Mosquitoes will stick to the bottle when they smell sweet wine.

　　Residual tea leaves in the house can be dried and ignited indoors, and mosquitoes can also be removed.

　　Thirdly, appropriate amount of mosquito repellent grass, clove, marigold, jasmine, mint and so on are planted at home. Its strong odor has mosquito control effect.

　　Fourth, to maintain personal hygiene, eat more vegetables containing carotene, garlic and other spicy vegetables, or oral B vitamins, human physiological metabolism from sweat discharged in vitro, will produce mosquitoes dare not approach the odor.

　　Fifth, use mosquito killing rackets, mosquito killing lamps and other tools to eliminate mosquitoes.