The homeowner can best apply such a quantity of insecticide by using a sprayer or a pint-size plastic wash bottle of the squeeze type, equipped with a tube that will produce a pinpoint stream. This makes it possible to apply small enough quantities to cover the surface without causing the liquid to run off. Repeated applications at different times are necessary for complete absorption by the wood and effective penetration. A pest-control operator can obtain results quickly by injecting the chemical under pressure through boreholes spaced at short intervals in the infested wood. =Slow-Diffusion Method= Where pressure equipment is not available and you want to use the bore-hole or slow-diffusion method on isolated infestations in wood that is readily accessible, you can use the following procedure: 1. Bore a downslanting hole about 1/2 inch in diameter and 1 inch deep into the wood near the place where a larva is working. 2. Insert a tight-fitting metal or glass tube in the hole. Let about 1/4 inch of the tube project. 3. Place one end of a rubber tube over the projecting portion of the metal or glass tube, and connect the other end with a funnel. The funnel should be supported so that it will stay in place until the treatment has been completed. 4. Pour insecticide into the funnel. Use any of the preparations mentioned in the discussion of spraying and brushing. Leave the equipment in place about 48 hours, or until the insecticide is taken up. The insecticide flows into the infested wood, is absorbed for a distance of several inches around the hole, and reaches and kills the larva. If several larvae are working in places as much as 18 inches apart, individual treatment is needed. =Fumigation= Treatment of a heavy infestation of powder-post beetles by spraying or brushing or by the slow-diffusion method is impractical where the wood is hard to reach; particularly when it is located behind plastered walls or covered by paneling or insulation. Such an infestation can be controlled by fumigation--_but this work must be done by a licensed fumigator_. Hydrocyanic acid gas or methyl bromide gas is used in fumigating. Each is very poisonous, and heavy dosages have to be used. After fumigation, the building must be aired to make it safe for reoccupancy. The fumigating and the airing require 2 to 4 days. Fumigation methods of the "home-remedy" type--such as burning sulfur candles--are ineffective because the fumigant does not penetrate the infested wood. PRECAUTIONS The insecticides mentioned in this leaflet are poisonous to people and to animals. Keep them where children and pets cannot reach them. Do not let them come in contact with the body. When applying them, wear rubber gloves, a cellulose acetate type of face-guard, and a rubber or leather apron. When spraying an overhead area, do not stand directly under it.