avlusing

Avlusing is the process of removing external parasites such as lice, mites, and other ectoparasites from humans, domestic animals, poultry, and even clothing or equipment. The goal is to reduce infestation, prevent disease transmission, and improve welfare.

The term is used in Scandinavian languages (avlusning) and English as delousing. It encompasses medical, veterinary, agricultural, and occupational practices.

Removal can be manual (careful combing of hair to extract nits and live lice), mechanical means (dusters or suction devices), and chemical treatments (pediculicides for humans; acaricides or insecticides for animals). Thermal methods such as controlled heat can be used in some settings. Cleaning and disinfection of clothing, bedding, and living spaces are essential to prevent reinfestation. In aquaculture, delousing may involve baths or feed additives and quarantine to address sea lice.

In humans, treatment aims to eradicate lice and nits, with attention to avoiding skin irritation and resistance. In livestock and aquaculture, delousing improves welfare and reduces disease risk but must follow veterinary guidance to avoid residues and environmental impact. Resistance to chemical treatments is an ongoing concern, leading to integrated pest management strategies and non-chemical approaches.

Delousing has a long history in public health and agriculture, with evolving methods as science advances. Regulatory frameworks govern approved products and practices to ensure safety for people, animals, and ecosystems.