What do bedbugs fear? - briefly
Bedbugs are repelled by temperatures exceeding 45 °C and by contact with substances such as diatomaceous earth, essential‑oil extracts, and synthetic pyrethroids. They also withdraw from strong vibrations and intense light, which indicate potential danger.
What do bedbugs fear? - in detail
Bedbugs exhibit strong aversion to environmental conditions that compromise their survival and reproductive success.
High temperatures above 45 °C cause rapid dehydration and protein denaturation, leading to mortality within minutes. Exposure to such heat can be achieved with portable steam devices or professional thermal treatments.
Low humidity, typically below 30 % relative humidity, accelerates water loss through the cuticle, resulting in desiccation. Dehumidifiers and prolonged ventilation create hostile conditions for these insects.
Extreme cold, especially temperatures under −17 °C, induces cellular ice formation and disrupts metabolic processes. Freezing infested items for at least 72 hours ensures lethal effects.
Chemical repellents and insecticides target the nervous system or cuticular integrity. Synthetic pyrethroids, neonicotinoids, and insect growth regulators interfere with nerve transmission or prevent molting.
Rapid fluctuations in carbon‑dioxide concentration, such as those produced by ventilation fans, disrupt host‑seeking behavior and reduce aggregation.
Mechanical vibrations and continuous low‑frequency sound interfere with the sensory organs used for mate detection, diminishing reproductive activity.
Intense illumination, particularly ultraviolet light, harms photoreceptive cells and deters nocturnal activity.
Natural predators, including certain ant species and predatory mites, attack bedbugs and their eggs, reducing population density.
Applying one or more of these stressors in a controlled manner creates conditions that bedbugs actively avoid, thereby contributing to effective management strategies.