How Do I Know if I Have Bed Bugs?

How Do I Know if I Have Bed Bugs?

Whether you think you may have found a bed bug or you're taking a preventative measure searching for bed bug signs, this guide will help you know what you're looking for.  

Bed Bug Size Reference

(Whitney Cranshaw, Colorado State University,

Adult bed bugs are tiny - measuring 1/4" with flat bodies similar to an apple seed.  Since bed bugs only feed every 3-7 days for less than 10 minutes, it's more common to find evidence that they've been there rather than the bug themselves.  Common signs include: 

  • Tiny reddish brown stains from their excrement 

Bed Bug Stains

(Gary Alpert, Harvard University,

  • Their exoskeleton after molting.  These cast skins will be a transparent shell the size of a bed bug.

Bed Bug Exoskeleton

(Gary Alpert, Harvard University,

A first indicator of the presence of bed bugs can also be curious itchy red welts from their bites; however the reaction typically takes nearly 2 weeks to present after a first bite.

Bed Bug Bite

(Whitney Cranshaw, Colorado State University,

 If you have found signs of bed bugs, please reference our Bed Bug Guide to conduct a thorough inspection and begin treatment.  



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