How To Detect Termites In Structures
The appearance of winged or swarming termites is often the first indication of a problem. Although the swarm poses little or no immediate danger to the structure, it gives warning of termites in, or in close vicinity, and the homeowner should make an effort to locate the source from which they are emerging.
Earthen shelter tubes, constructed over surfaces of foundation walls, or sometimes directly connecting the soil and the structure, are another readily visible sign of termite infestation. These tubes are between 1/4" and 1/2" or more wide. If it is in use, the inside is moist and there may be white workers present. Also, if a section is broken, the workers will repair it as soon as possible because it is used as a passageway between the wood and the soil from which they obtain essential moisture. The tubes also protect the termites from the drying effects of direct exposure to air.
Without the external evidence of winged termites or visible shelter tubes, it is more difficult to determine whether or not termites are present in a building. The first place to be checked is the wood which is near or rests on the ground. Weather boarding, wood supports, basement window frames, door casings, sills, etc., can be checked for soundness by being tapped with a hammer and probed with a screwdriver. If hollow wood is found, and it is the result of a termite infestation, the soft portions of the wood will be eaten leaving the hard sections. |
You can do this inspection yourself although many Termite Companies offer free inspections when you want your home checked thoroughly. 
Here are some things you can do to help prevent termite infestations. Remember the best defense is a rigorous offence. 