Insecticide Treated Materials

Long-lasting insecticide treatment can be a highly effective tool in malaria control when used routinely.

Mosquito nets have been used in one form or another for hundreds of years. However, it was not until the 1990s when the benefit of treating a net with an insecticide was recognised as having a potentially important role as a vector control tool against malaria. Treatment of a mosquito net with an appropriate insecticide improves the protective effect provided by the net (mosquitoes are able to bite through untreated nets if skin is adjacent to the netting material or if they find holes in untreated, worn nets). Long-lasting insecticide treatment (that can resist multiple washings of a net over an extended period) can result in a highly effective tool for malaria control when used routinely. Long-lasting insecticide-treated bed nets (LLINs) are now a widely recognised tool in the fight against malaria and several different types of LLINs exist.

Synthetic pyrethroids are the only group of insecticides currently recommended for treatment of bed nets. Deltamethrin and permethrin are the two most common active ingredients which are used due to their favourable safety profile and biological performance. Deltamethrin is particularly suitable for use in the impregnation of bed nets since it is effective at very low doses. The process to treat a bed net with an insecticide can either be done at the factory stage (i.e. during manufacturing process prior to sale) or in the field (prior to use or after a previous insecticide treatment has lost its effectiveness).

Bayer offers retreatment kit option K-O Tab for untreated nets.