This study shows that the resurgence of dengue vectors after space spraying in urban areas is rapid, and within 6 days of spraying, adult Ae. aegypti populations returned to their base value. SID-ULV is an effective method of space spraying which has greater potential to control adult dengue vector populations than regular ULV spraying. However, SID-ULV spraying or regular ULV spraying applied as a single intervention to suppress dengue vector populations may be an ineffective measure and the externality effects on nearby unsprayed houses requires further study.