Trained dogs may be used to help eradicate bed bugs. A sign that your home is infested with bed bugs is the presence of bites. If bites appear in a straight line, on the skin, then that's a classic sign of bed bug bites. Trained dogs are able to pinpoint the bed bug infestation. They are 98% accurate, when other methods are only effective 30% of the time. Bed bugs may be prevented from infesting your mattress, if you use special mattress covers. Whenever you take a trip, wash and dry all of your clothes in very hot water. Leave suitcases in the car, until you are ready to wash your clothes. Wash clothes, even if you haven't worn them.