Booklice (order Psocoptera) are tiny soft-bodied insects measuring 1 to 2mm. Despite the name, they are not true lice and do not bite humans or animals. They feed on mould, fungi and starchy materials such as wallpaper paste, book bindings and stored food packaging. While not directly harmful to health, a large infestation indicates a moisture or mould problem that should be addressed.

Booklice thrive in humid environments with relative humidity above 60%. They are most commonly found in Singapore homes with poor ventilation, condensation on walls, stored cardboard boxes, old books and kitchen cupboards. They often arrive inside packaging and multiply rapidly in warm, damp conditions.

The most common areas include kitchen cupboards, bathroom cabinets, bookshelves, storage rooms with cardboard boxes, areas near air-conditioning units with condensation, and behind wallpaper. They are frequently found in new or recently renovated properties where building materials have not fully dried.

Yes, but they are very small at 1 to 2mm and pale in colour making them easy to miss. They move quickly when disturbed. You are more likely to notice them as a fine grey dust moving across surfaces, particularly on paper, cardboard or shelving. A magnifying glass makes identification much easier.

Minor infestations can sometimes be reduced through humidity control, sunlight exposure and thorough cleaning. However, booklice reproduce rapidly and if the underlying moisture problem is not resolved they will return. Over-the-counter sprays often miss eggs and hidden colonies. Professional treatment with residual insecticide combined with humidity management delivers lasting results.

Yes. Our NEA-licensed technicians use approved insecticides applied at the minimum effective dose. Residents and pets vacate the treated areas for a short period. Once surfaces are dry the products are safe. We also advise on long-term humidity reduction which is the most important factor in preventing reinfestation.

A standard booklice treatment takes 30 to 60 minutes. Our technician will inspect the property, identify the hot spots and apply targeted treatment. A follow-up visit confirms elimination and checks that humidity levels have been reduced to prevent return.

The single most effective prevention measure is keeping indoor humidity below 55%. Use a dehumidifier in storage areas and ensure adequate ventilation throughout the property. Remove old cardboard boxes, inspect incoming packaging, and address any water leaks or condensation points promptly.