The infection hangs about a room or house for a very long time and is difficult to dislodge. Fumigation with Sulphur, however, may be employed by any one, and must first be carried out. A pound of Brimstone, broken into small pieces, should be put into an iron dish (or a lid of an iron saucepan turned upside down) supported by a pair of tongs over a bucket of water. The fireplace and outer openings, such as the crevices of the windows, are then to be closed by pasting paper over them, and a shovelful of live coals is to be put upon the brimstone. The door is then to be quickly shut, the crevices pasted up with paper, and the room kept closed for five or six hours. Articles of clothing hung up loosely, and beds, bedding, and other things left uncovered in the room, are fumigated at the same time. The paper on the walls must then, in every instance, be wetted with a solution of Carbolic acid, stripped off and burned; and the walls, ceilings, paint, and floors, must be well washed with a solution of Carbolic acid. After this, a thorough cleaning should be made; everything that can, should be washed with a little Carbolic acid in the water and boiled. The ceiling of the room should then be lime-whited. Anything short of this is not a proper disinfectant; but the room may afterwards, when possible, be left unoccupied, with the windows open, for a week or a fortnight with great advantage.