Application Technique: Injection holes (typically 7/64" or 1/8" in diameter) should be drilled in the area of suspected or known infestation. Drill the holes through the widest dimension of the wood that is available. Holes should extend approximately 3/4 of the way into the beam. If the widest surface is not accessible, holes can be drilled approximately 8-10 inches apart into a narrower surface. Press and hold the injection tip firmly into each hole and inject Boracare until runoff is observed from other holes, galleries, kick-out holes, etc. You may get splash back if the wood is solid. Release the trigger, wait briefly and withdraw the injection tip. Excess solution can be absorbed with paper towels and disposed of in ordinary trash. The holes should be in a diamond pattern and be spaced approximately 4-6 inches across the grain and 12-16 inches along the grain (Figure 1). When possible, the wood should be treated one diamond length pattern beyond the immediate area of visible infestation.
Bora-Care is usually the preferred choice if most of the wood is exposed and it is raw wood you are treating, meaning it is not painted, stained, or sealed, it is just normal wood. Bora-Care is made only for wood, and you do not have to know exactly where the termites are for it to work which is a plus. Bora-Care is sprayed evenly over all exposed surfaces of the wood and actually penetrates through the entire piece of wood. When the termites in the wood try to consume the wood after it has been treated, they ingest the Bora-Care with the wood and die. No matter where they are in the wood the Bora-Care will find them as long as you treated the exposed wood that you can see. The other main benefit is that Bora-Care stays in the wood forever, so you will not have to worry about termites or beetles infesting the wood that you treated ever again.
Bora-Care: http://www.domyownpestcontrol.com/boracare-p-100.html