Holes should be spaced approximately 4 to 6 inches across the grain. When possible, the wood should be treated one diamond length pattern beyond the immediate area of visible infestation. If the widest surface is not accessible, holes can be drilled in the narrower surface as in Figure 2. Drill holes approximately 8-10 inches apart. When injecting solid wood, maintain the injection pressure for 15 to 60 seconds at each hole.
Longer times give better penetration.
Release the trigger, wait briefly and withdraw the injection tip. This will allow the solution to flow into the drilled wood.