Textile materials treated with synthetic repellents have the potential to provide protection against insect disease vectors but lack the residual activity necessary to achieve a prolonged effect or to be cost-effective. DEET MC is a formulation of DEET (N,N diethyl-m-toluamide) in which the repellent is gradually released from a capsule that binds the repellent. An experiment carried out on DEET-treated mosquito netting showed that the formulation repels, inhibits blood-feeding and kills mosquitoes for a period of at least 6 months under laboratory conditions. Such formulations may have the potential for use on nets against pyrethroid-resistant mosquitoes or on clothing or bedding materials distributed in disasters, emergencies or refugee camp situations.
Transactions of the Royal Society of Tropical Medicine and Hygiene (2008) 102 (3) 259-262 [doi:10.1016/j.trstmh.2007.10.012]
DEET microencapsulation: a slow-release formulation enhancing the residual efficacy of bed nets against malaria vectors