How does DEET primarily function to repel biting pests?
Answer
By interfering with the olfactory receptors of insects, making it difficult for them to locate a host
DEET functions by disrupting the sensory mechanisms of insects. Specifically, it masks the cues that insects use to identify and track humans, such as odors. By interfering with their olfactory receptors, the chemical effectively hides the target host from the biting insects, preventing them from landing and feeding. This mechanism is the reason why the substance acts as a repellent rather than a toxicant or a physical barrier.
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