The article explains a study showing that bed bugs strongly avoid water and wet surfaces because contact with moisture can trap them and block their tiny breathing openings. Researchers observed that bed bugs quickly turned away from damp areas during experiments, and this behavior was consistent across different ages and sexes. Dong‑Hwan Choe, a professor of entomology at University of California, Riverside, helped lead the research and explained that water can stick to a bed bug’s body and prevent it from breathing. His team first noticed this behavior when bed bugs avoided a damp area in their lab, which led them to conduct experiments confirming that moisture naturally repels the insects and could help scientists improve pest-control methods.