This coil is very dangerous for the health of the people who are using it. It produces so much of smog and do not kill that much of mosquitos which are generally killed by other coils. If we use it in a pack room than the smog produced by it covers the whole room . If anyone is using it regularly than they must suffer lungs problems. It affect the health of an individual very badly. It is not a user friendly coil because it causes so much of smog , this is fully chemicalised coil so it produces pollution also