Bayer Advanced 700310 Carpenter Ant and Termite Killer Plus Concentrate, 32-Ounce Bayer Carpenter Ant & Termite Killer Concentrate 32oz Kills a wide range of climbing and flying wood-infesting insects Kills on contact Broad spectrum outdoor use - lawn, landscape, foundation, trench, deck and patio, wood piles, and home structures Carpenter bees prefer unfinished wood. An easy deterrent is to keep all your wood freshly stained or painted. Woodpeckers also damage your home as they try to get to the carpenter bee larvae.