Mosquito nets keep bugs out best when pretreated with a pyrethroid insecticide. ... Long-lasting insecticide-treated bed nets (LLINs), however, maintain their effectiveness for up to three years. These are regularly distributed through malarious areas and have been associated with a sharp decrease in cases of malaria.

Is mosquito netting effective?

According to a 2015 Nature study, mosquito nets averted 68% of an estimated 663 million averted cases of malaria infection since 2000. It is also one of the most cost-effective methods of prevention.

Can mosquitoes bite through mosquito netting?

Mosquito nets, also called bednets, are hung over beds, desks, or even cooking areas. Some tents are made of mosquito-net fabric, to help campers avoid the pesky insects. Light and air can easily penetrate mosquito nets, but mosquitoes cannot. The sharp proboscis of the mosquito can penetrate the net, however.