Today I am adding a post script to the bed bugs article. It is a good idea to regularly vacuum your mattress and living/family room furniture. Those are the areas where bed bugs hide. But if there is a bad infestation, they can be found behind the light switch, wall outlets, alarm clocks, lamps, or whatever is a dark environment.
Also, it is a good idea to not buy used furniture. If you do however, vacuum it thoroughly and spray with a professional strength spray for that purpose.
You have to have a good vacuum such as Windsor Sensor or Miele. These have superior suction. I prefer to use bags for the reason that if there are critters in the house there is no escape.