With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: The primary method of controlling "A. aegypti" is by eliminating its habitats. This is done by getting rid of open sources of water, or if this is not possible, by adding insecticides or biological control agents to these areas. Generalized spraying with organophosphate or pyrethroid insecticides, while sometimes done, is not thought to be effective. Reducing open collections of water through environmental modification is the preferred method of control, given the concerns of negative health effects from insecticides and greater logistical difficulties with control agents. People accepting mosquito bites is the most effective way to eliminate the need to wear clothing that fully covers the skin, mosquito netting while resting and the application of DEET insect repellent. While these measures can be an effective means of reducing an individual's risk of exposure, they do little in terms of mitigating the frequency of outbreaks, which appear to be on the rise in some areas, probably due to urbanization increasing the habitat of "A. aegypti". The range of the disease also appears to be expanding possibly due to climate change.
text_B: Is DEET the most effective mosquito repellent?
DON'T KNOW.