PERMETHRIN AS A TENT TREATMENT FOR PROTECTION AGAINST FIELD POPULATIONS OF AEDES MOSQUITOS

A tent treated with an oil-based 1% permethrin formulation (0.936 g AI /m(2)) was evaluated for protection against Aedes spp. Mosquito biting assessment was conducted in the field using 8 human subjects position ed inside and outside tents. Subjects inside tents received 66.8% fewe r bites than subjects outside tents prior to treatment. Following trea tment, subjects inside the treated tent had significant (P less than o r equal to 0.05) protection (84-94% bite reduction) for 42 days. Subje cts outside the treated tent experienced 43-82% fewer biting mosquitoe s than subjects outside the untreated tent. The treated tent remained lethal greater than or equal to 42 days to mosquitoes exposed to the t ent fabric in field bioassays.