How do you check for bedbugs?

This post was sourced from submitted reader questions and posted by wikiHow Editorial Staff, based on our article: How to Check for Bedbugs .

Expert Comments

Brandon Runyon
Entomology and Pest Control Expert

03/18/25 4:18pm

The approach depends on the setting. If you're traveling, start by checking the mattress since that’s the direct link to humans. Pull the sheets back and inspect the mattress seams. In larger infestations, you might see red staining on the mattress or pillowcases—that’s digested blood residue. Bedbugs are about the size of an apple seed, dark reddish-brown, and often cluster along mattress seams.

If you don’t see them there, check the headboard, especially where the seams come together. They prefer wood over metal, so they’ll often hide in small cracks. You can also check nightstands, books, and even dresser drawers. In homes, you should also inspect baseboards since bedbugs spread as the population grows.

If you’re bringing in second-hand furniture—especially upholstered pieces—inspect the seams, zippers, and hidden crevices. That’s a common way they get introduced into homes.

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Anonymous WikiStoat

03/21/25 4:23pm

What do you do if you think you have them?

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Brandon Runyon
Entomology and Pest Control Expert

03/25/25 6:39pm

Hello. One of the first things is to be sure you have them properly identified. There are great pictures on them on wikiHow that you can look at. You will be able to find options near you, and local pest control companies can identify them. You can also contact your local extension office. From there, you can have a company treat the bedbugs, which can be done in a few ways. There are also remedies and products you can purchase yourself. Just be sure to follow the labels and check to make sure they are appropriate treatments for bedbugs. If you have questions about treatment details, just reply here and I can share more!

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