They could be under there.

Some people seem to think that a bed bug infestation tends to be specific to areas of the home like beds, linens, clothes and furniture with some kind of fabric available for the bugs to live in. Think again hot shot! Bed bugs can live for decades in wood working and really just about anywhere else they might want to live. There is no rule binding them to a given structure or material. Bed bugs can hide in the floor boards of your home long before you moved there and can stay long after you have left if not dealt with.

It is with this in mind that innovative folks began using bed bug sniffing dogs to suss out the origin of a given infestation and to identify that this was indeed a bed bug situation. Once the problem is identified the extermination process must be thorough and take into account the flooring, walls and ceiling to ensure that these critters do not once again go dormant for a period before rising up again and terrorizing your home and family once more.

So just because you see a bug no where near your bed does not mean you are assuredly not dealing with a bed bug situation. Be careful.