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Evidently, mosquitoes can be conditioned through Pavlovian training to associate DEET's smell with a blood meal, flipping their response from avoidance to attraction. Lab results showed over 60% of trained mosquitoes attempted to bite a DEET-treated hand, while untrained ones avoided it entirely. This reveals DEET has a cognitive vulnerability, not just a chemical one, that demands smarter repellent strategies going forward.
The key practical takeaway from this isn't that DEET fails, it's that regular reapplication keeps concentrations high enough to prevent mosquitoes from ever forming a learned association in the first place. Pair consistent DEET use with smart habits like camping in breezy spots and wearing tightly woven fabrics, and mosquitoes don't stand a chance.