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Bed Bugs are increasingly becoming a problem within residences of all kinds, including homes, apartments, dormitories, cruise ships and shelters. "Bed Bugs 101" is written by Richard Cooper, entomologist and Vice President of Bed Bug Central, and is designed to help educate the public on this rapidly growing pest problem.
Introduction History & Resurgence
Identification Biology & Behavior
Disease & Bite Symptoms Sanitation
Avoiding Infestations Early Detection
Early Detection Tools & Methods Protect Yourself When You Travel
Elimination of Infestations Mattress and Box Spring Encasements
Canine Scent Detection Challenges with Bed Bug Control Efforts
Surrounding Units How Do I Know I Have Bed Bugs?
I Have Bed Bugs, Now What? Should I Vacate the Structure?
What Should I Do With My Bed? Are Bed Bugs Difficult to Control?
How Long Does It Take To Control Bed Bugs? What Products Work Best?
Additional Information

Bed Bugs 101 - How Do I Know I Have Bed Bugs?

KEY POINTS:
  • A physical sample of an actual bug or egg is required to be 100% certain that you have bed bugs
  • Bite symptoms are a good indicator but cannot be diagnosed with 100% certainty
  • The most effective inspections are conducted by a qualified pest management professional

The only way to know for sure if you have bed bugs, is to produce an actual sample of the bug itself. Do not automatically assume that any bite-like mark is a bed bug bite. Also it is important to realize that medical professionals cannot give a positive diagnosis simply by examining bite symptoms, they can only suggest some possible explanations for what may have caused the bites/symptoms to occur. Obviously if you see bugs in your home associated with your bedding or other furniture, you should have it examined by a professional that is qualified to provide a positive identification. However, if you are experiencing bites but have not seen any bugs, you should consider the circumstances in which the bites are occurring. For example, there is a very good chance that you have bed bugs if you keep repeatedly waking up each morning with bite symptoms on your body that were not present when you went to sleep. A situation like this would be a good reason to have a pest management professional perform an inspection to identify if bed bugs are present. On the other hand, bites that occur at various times of the day in various locations such as at home, in the car, at work, etc. are much less likely to be caused by bed bugs. It is also important to realize that just because you have looked for bed bugs and could not find them, does not mean that they are not there. These insects lead a very cryptic and secretive lifestyle and will often go undetected. It is best to have a highly trained professional conduct the inspection for you.

Occasionally you may see evidence of a bed bug infestation without actually seeing any bed bugs. Bed bugs leave fecal stains in the areas they inhabit. These stains are actually partially digested blood but remember that it will not be red unless you crush a bed bug that has just recently fed. As the blood is digested it turns black and therefore the bed bug droppings usually consist of several black spots in one area. The fecal spots will not flake off if rubbed and will smear if wiped with a wet rag.

Fecal spotting tends to appear as not as red blood but instead as dark/black stains or smears from the digested blood that is excreted (fecal spotting along box spring frame).Fecal spotting on a box springFecal spotting inside of a box spring
Fecal spotting, shed skins, eggs & live bug along the bottom of a box springFecal spotting on the back of a head boardFecal spotting and shed skin along mattress piping

Bed Bugs 101: How Do I Know I Have Bed Bugs?



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