Fumigation is an attempt to explain, in as non-technical a way as possible, how to free a building of pests which might damage the collections and how to keep it that way. The total fumigation of a building and the possible fumigants are discussed. Basic pest control rules which all the staff should observe are laid out. Finally, differing methods of artifact fumigation are set out and the most advantageous circumstances under which they should be used discussed. Plans for a walk-in and a small fumigation chamber as well as safety procedures, details of fumigants and a short bibliography have been included as appendices.