Bor8 Rods are inserted into drilled holes in wood that is often already damaged or finished. Boracare is a liquid concentrate that is applied to raw wood using a sprayer, brush, or roller, so it is to treat the entire piece of wood. If you are treating raw wood (no paint, stain, or other finish), then we suggest Boracare for the most complete and long-lasting treatment against wood decay fungus and wood-destroying insects.