The nets are hung over beds or mats. Most nets cover three children. The nets protect people from being bitten by mosquitoes at night. The insecticide will kill those mosquitoes that come in contact with it, as well as repel and reduce the number of mosquitoes that enter the house. Research has shown that the actual mosquito population drops by as much as 90% when three-quarters of the community uses nets consistently. The insecticide used in the nets distributed through NetsforLife® is deltamethrine. This insecticide is believed to be superior to the conventional permethrine used in re-treated nets.