Mosquito repellent is important because the mosquitoes that can carry a lot of serious diseases. Moving objects such as West Nile virus and malaria by mosquitoes, and most doctors recommend that all it can to prevent these conditions by keeping mosquitoes away from you. There was a review of several types of mosquito repellents that work best, experts normally concluded that the mosquito the most effective repellent is one containing DEET.DEET (N, N diethyl meta - toluamide) is not only useful in repelling mosquitoes, but also to move away other insects such as ticks that may carry Lyme disease. It confuses most of the bugs that hide the smell of gas carbon dioxide, which gives the body normally off, and attract insects. DEET should be used properly and in appropriate concentrations. A higher level of concentration tends to translate for repellent.For insects longer lasting than the people who can not or choose not to use DEET, there are some elements of alternative mosquito repellent. They have some effectiveness, but still not as effective as DEET. However, some safe enough for use on younger children. One of these is the oxidation or picaridin. Elements of the U.S. Centers for Disease lists this article as a viable alternative to DEET.