Like HowStuffWorks on Facebook!

Signs You Have an Infestation

Bed Bugs

By the time you notice or properly identify bed-bug bites on your skin, the bugs may have already set up a thriving community. In earlier stages of infestation, more reliable signs of bed bugs – beyond the bugs themselves – include tiny dark spots on your sheets or mattress, white eggs or shells, empty bed bug skins, or small red marks left on your bedding by dead bugs. You can also build your own bed bug detector for about $15.