...They tend to stay on or in the bed. I honestly think this is, on the whole, a very easy problem to deal with...
This is incorrect. If you've never dealt with a BB infestation, you have no idea what you're talking about. Going to bed, KNOWING that you WILL be bit, has a tremendous psychological impact. DO NOT take the presence of a single BB lightly.
BB will travel to any area they can hide. Preferably, one that has a nearby food source (you). They are not slow walkers. Bed-side tables, picture frames, electric outlet covers, pillows, baseboards, headboards, box springs, clothing, etc. They bite you, and drink the blood from the wound. The brown spots that appear is their waste - your blood. Some people have very little reaction to the bites. Some people are highly sensitive and the itch is as bad, or worse, than Poison Ivy. If it's not dealt with, one bite will become five, then twenty, etc. BB should not be trivialized or taken lightly.