Tests were conducted by the Metropolitan mosquito control district to determine the operational effectiveness of SBP-1382 resmethrin nonthermal aerosols delivered by ground equipment in densely wooded areas. Percent control is reported for a dosage range of 0.0007 Ib AI/acre to 0.007 Ib AI/acre. Treatment rates higher than those used in open areas were found necessary to achieve adequate control of Aedes mosquitoes. A discussion of the cost of treatment required to achieve specified control levels is included.