Start here
Quick, low-risk steps
- Check mattress seams, box springs, and bed frames for live bugs or dark spots.
- Look for shed skins, tiny white eggs, or rust-colored stains on sheets.
- Capture any suspect insect or skin in a sealed container for identification.
- Record the date and exact location of each finding.
- Avoid moving items from the room until a professional confirms the issue.
Reliable Physical Evidence
Bed bugs leave several types of physical evidence that are more reliable than bite marks. Look for live insects, which are small, flat, and reddish-brown. They often hide in mattress seams, bed frames, and furniture joints.
Other signs include dark fecal spots on bedding or walls, shed skins as they grow, and tiny white eggs in crevices. A sweet, musty odor may be present in heavy infestations.
- Live bed bugs: apple-seed-sized, flat, reddish-brown
- Fecal spots: dark, ink-like stains on fabric or wood
- Shed skins: translucent, empty exoskeletons
- Eggs: tiny, white, cemented to surfaces
- Musty odor: noticeable only in large numbers
Why Bites Are Not Enough
Bite reactions vary widely. Some people have no reaction, while others develop red, itchy welts. These can resemble mosquito or flea bites, and the pattern is not unique to bed bugs.
Relying on bites alone often leads to misdiagnosis. Other pests, skin conditions, or allergies can cause similar marks. Always look for physical evidence before assuming bed bugs.
- Bite reactions differ from person to person
- No typical bite pattern confirms bed bugs
- Other insects cause similar skin reactions
- Skin conditions can mimic insect bites
- Physical evidence is needed for accurate ID
Where to Search
Start with the bed: inspect mattress seams, tufts, and tags. Check the box spring, bed frame, and headboard. Use a flashlight and a magnifying glass to spot small signs.
Expand to nearby furniture, baseboards, electrical outlets, and wall hangings. Bed bugs can hide in any crack or crevice within a few feet of sleeping areas.
- Mattress seams and tags
- Box spring and bed frame joints
- Headboard and footboard crevices
- Nightstands and dressers near the bed
- Baseboards and carpet edges
Documenting and Next Steps
If you find evidence, capture a sample in a sealed container or take clear photos. Note the date and exact location. This helps a professional assess the infestation.
Do not move items out of the room. This can spread bed bugs to other areas. Contact a pest management professional for an inspection and treatment plan.
- Seal a specimen in a container for ID
- Take photos of stains, skins, or bugs
- Record date and location of each finding
- Avoid moving infested items to other rooms
- Schedule a professional inspection promptly
Take this with you
Evidence and scope checklist
- Live bed bugs seen and captured?
- Fecal spots on bedding or furniture?
- Shed skins found in crevices?
- Eggs visible in seams or cracks?
- Bite marks present but no physical evidence?
- Specimen collected for professional ID?
- Date and location of each sign recorded?
- Adjacent rooms or units checked?
- Items contained to prevent spread?
- Professional inspection scheduled?
Common questions
What homeowners ask next
Can I identify bed bugs from bites alone?
No. Bite reactions vary and are not unique to bed bugs. Physical evidence is required for a reliable identification.
What should I do if I find a bug I think is a bed bug?
Capture it in a sealed container and contact a pest management professional for identification. Do not crush it, as that can make ID harder.
How do I know if the dark spots are bed bug feces?
Bed bug fecal spots are dark, ink-like, and may smear when wiped with a damp cloth. A professional can confirm.
Evidence
Sources used for this guide
Research checked July 31, 2026
- Getting rid of bed bugsU.S. Environmental Protection Agency
Evidence, treatment preparation, and long-term IPM; bites alone do not diagnose.
- Do-it-yourself bed bug controlU.S. Environmental Protection Agency
Label-compliant low-risk steps and dangerous-method warnings.
Optional next step
Need an on-site professional?
Use the guide and worksheet first so you can describe the situation and compare the full scope. A referral is optional; you can also contact a licensed local provider directly.
We have not enabled a provider route for this site. Use the checklist to contact and verify local providers yourself; urgent hazards should go to the appropriate emergency or public service.