How can book lice be eliminated? - briefly
Thoroughly clean and vacuum all affected areas, lower ambient humidity below 60 % by using dehumidifiers or ventilation, and treat remaining insects with approved aerosol or powder insecticides; for infested books, isolate them and apply low‑temperature freezing or heat treatment (above 55 °C for several hours) before returning them to storage.
How can book lice be eliminated? - in detail
Booklice, also known as psocids, thrive in humid environments where organic debris accumulates. Effective eradication requires a combination of environmental control, mechanical removal, and, when necessary, targeted chemical action.
First, reduce moisture levels. Keep relative humidity below 60 % throughout storage areas by using dehumidifiers, improving ventilation, and fixing leaks. Dry conditions inhibit reproduction and cause existing individuals to die.
Second, eliminate food sources. Vacuum shelves, drawers, and surrounding floor surfaces to remove dust, mold, and fungal spores. Dispose of the vacuum bag or clean the canister immediately to prevent re‑infestation.
Third, isolate affected items. Place books, papers, or textiles in sealed plastic bags for several days; lack of oxygen and moisture will suppress the population. For heavily infested objects, consider freezing at –18 °C for at least 72 hours, then thawing in a dry environment.
Fourth, apply non‑chemical treatments. Light exposure, especially ultraviolet, can reduce numbers on exposed surfaces. Heat treatment—raising ambient temperature to 50 °C for a minimum of 30 minutes—also proves lethal.
Fifth, use targeted insecticides only when other measures fail. Apply a residual aerosol labeled for psocids to cracks, crevices, and the undersides of shelves. Follow label instructions precisely, ensuring adequate ventilation during and after application.
Finally, maintain preventive practices. Monitor humidity with hygrometers, schedule regular cleaning, and inspect new acquisitions before introducing them to the collection. Consistent vigilance prevents re‑establishment of the pest.