An easy way to check for termites is to tap wood along the wall every few inches with a screwdriver handle. Damaged wood will sound hollow and, if the area is extremely damaged, the handle may break the wood’s surface. If the area is still active, you may see worker termites inside. Dark areas or blisters in wood flooring are an indicator of subterranean termite infestation. Because subterranean termites are preventable, it is a good idea to have your property regularly inspected by a trained specialist.