BedBugBed bugs: Bed bugs are little reddish brown bugs that as you can assume live in mattresses. They feed on the blood of their hosts much like mosquitoes. Bed bugs are most times brought into homes through second hand furniture as well as extensive tourism and traveling. Some signs of infestations are finding the actual brown bugs, spots of fecal matter on the mattress, and bite marks on your person. They will hide in the mattress at night to feed on the hosts. Then in the light of day they will scatter to other furniture, such as headboards, box springs, and bed frames.