Bed Bug Casings

Bed Bug Casings: What Are They, Identifications & How To Get Rid Them

There’s something unsettling about finding bed bug casings. Maybe it’s the fact that you know the pests have been there, lurking and multiplying. Or maybe it’s because the casings look so creepy, like tiny black spiders clinging to your walls. In any case, if you’ve discovered these nasty critters in your home, it’s time to take action!

This article will teach you everything you need to know about bed bug casings, what they are, how to identify them, and how to get rid of them for good.

What are bed bug casings?

Bed bug infestations are often characterized by finding small brown or reddish-brown bugs in the cracks and crevices of mattresses, headboards, furniture, and baseboards. These bugs are actually bedbugs in their casing stage of life. The bed bug casing is the exoskeleton (outer shell) that a bedbug sheds as it grows from a nymph to an adult.

As bedbugs feeding on blood grow, they molt or shed their exoskeletons. A cast skin or ejaculatory valves (the part of the male’s reproductive system that he uses to inject sperm into the female during mating) may be found near areas where you’ve been sleeping or resting.

Look for these signs of bed bug casings:

  • Bed bug casings are small, ranging in size from about one to five millimeters.
  • They are oval shaped and have a flattened appearance.
  • Bed bug casings are usually a light brown color, but they may be darker after a blood meal.
  • The casings have a smooth, shiny surface.
  • Bed bug casings are typically found in areas where bedbugs hide, such as in cracks and crevices in mattresses, headboards, furniture, and baseboards.

How to get rid of bed bug casings?

To get rid of bed bug casings, you need to first get rid of the bed bugs. Once the bed bugs have been eliminated, the casings will eventually disappear as well. There are a few ways to get rid of bed bugs, including chemical remedies, heat treatment, and mechanical removal. For more information on how to get rid of bed bugs, please see our article on How to Get Rid of Bed Bugs.

If you’re looking for a chemical-free way to get rid of bed bug casings, consider using a steam cleaner. Steam cleaners are a great way to kill bed bugs and their eggs because they use hot water vapor to penetrate deep into cracks and crevices where the bugs often hide.

Prevention tips for avoiding bed bug casings in the future:

The best way to avoid bed bug casings is to prevent them from ever getting into your home in the first place. Here are a few tips to help you do just that:

  • Inspect secondhand furniture, mattresses, and other items before bringing them into your home. Bed bugs are often hitchhikers and will gladly take up residence in your home if given the chance.
  • Vacuum regularly and don’t forget to empty the vacuum bag after each use. Bed bugs are small, but they can be sucked up by a vacuum cleaner and then deposited into the trash where they will die.
  • Keep your home clean and clutter-free. Bed bugs are attracted to dirt and clutter and will use it as a hiding place.
  • Inspect your home regularly for signs of bed bugs, such as small brown or reddish-brown bugs in the cracks and crevices of mattresses, headboards, furniture, and baseboards.


Although bed bug casings may look scary, they are actually a good indication that you have successfully gotten rid of the pests. Bed bug casings will start to disappear within two weeks of extermination, so keep an eye out and be sure to celebrate once they’re gone for good!

If you are still struggling with bed bugs after trying these methods, please reach out for professional help. Good luck and don’t let the bed bugs bite!


What color are bed bug casings?

Bed bug casings are typically a light brown color. However, they can vary in color depending on what they have been feeding on. For example, if bed bugs have been feeding on blood, their casings may be a darker red or brown color.

What does it mean when you find a bed bug shell?

A bed bug shell is the exoskeleton of a bed bug that has molted, or shed its skin. Bed bugs must shed their skins in order to grow, and they shedding usually occurs during their nymph stage.

Consequently, finding a bed bug shell can mean one of two things: either you have an infestation and the bedbugs are actively shedding their skins, or you’ve simply found an old shed skin. Either way, it’s not a good sign.

Do bed bugs come from shells?

This is a common question that people have, as there are many myths and misunderstandings about bed bugs. Bed bugs do not come from shells, but instead they are found in mattresses, couches, bed frames, and other furniture.

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