Dengue viruses are transmitted to humans primarily by the
mosquito Aedes aegypti and represent an increasing public health
concern in tropical and subtropical regions worldwide. Because no
vaccine or antiviral therapy is commercially available, controlling
the mosquito vector is the only current means to prevent dengue
outbreaks [1]. Contemporary control campaigns, rather than
attempting to eradicate Ae. aegypti, aim to suppress mosquito
populations below a threshold density at which they no longer
support viral amplification [2]. Controlling adult mosquitoes is
made challenging by the behavior of domestic Ae. aegypti. Adult Ae.
aegypti rest inside homes, typically on clothing, curtains, bedspreads,
and furniture, items that cannot be sprayed with residual
insecticides [3]. Aerosol space sprays consist of small airborne
droplets of insecticide designed to kill adult mosquitoes on contact,
but difficulty in reaching indoor adult resting sites can limit their
efficacy [4]. Even when space sprays are effective in reducing adult