Bed bugs have made a dramatic comeback over the past two decades. These tiny, flat insects hide in mattresses, furniture, and cracks — and they're excellent at staying out of sight. Here's how to spot an infestation before it takes over your home.
What Are Bed Bugs?
Bed bugs (Cimex lectularius) are small, reddish-brown insects that feed exclusively on blood. They're about the size of an apple seed. They're not dangerous in the traditional sense — they don't transmit disease — but their bites cause itching, allergic reactions, and serious psychological distress.
10 Signs You Have Bed Bugs
1. Unexplained Bites on Your Skin
Waking up with itchy, red bites — often in a line or cluster — is one of the most common signs. Bed bug bites typically appear on exposed skin: arms, shoulders, neck, and face.
2. Blood Stains on Sheets
After feeding, bed bugs can be crushed when you move in your sleep. This leaves small rust-colored blood spots on your sheets and pillowcases.
3. Dark or Rusty Fecal Spots
Bed bugs leave behind small dark spots (their feces) on sheets, mattresses, and nearby furniture. These spots don't wipe away easily.
4. Shed Skins and Egg Casings
As bed bugs grow, they shed their exoskeletons. You may find these translucent shells near mattress seams, bed frames, or baseboards.
5. Musty, Sweet Odor
In larger infestations, bed bugs release alarm pheromones that produce a distinctive musty or sweet smell.
6. Live Bugs Themselves
Adult bed bugs are visible to the naked eye. Check mattress seams, box springs, bed frames, and furniture joints.
7. Tiny White Eggs or Egg Casings
Bed bug eggs are about 1mm. They're pearly white and often found in clusters in crevices.
8. Specks on Mattress Seams
Run your hand along mattress seams. You might find live bugs, shed skins, fecal spots, or eggs.
9. Wall or Furniture Cracks Near the Bed
Bed bugs hide in cracks within 5–8 feet of where people sleep. Check baseboards, electrical outlets, picture frames, and furniture near the bed.
10. Guest Complaints
If hotel guests, family members, or roommates report bites, take it seriously. Bed bugs spread easily through luggage, clothing, and used furniture.
Can You Get Rid of Bed Bugs Yourself?
- Early-stage infestations can sometimes be managed with thorough cleaning, vacuuming, and encasements
- Established infestations almost always require professional heat or chemical treatment
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Not sure what you're dealing with? Scout AI can help you identify common pests and determine whether professional treatment is needed. If you want to see the step-by-step flow first, review how it works.
Key Takeaways
- Look for bites, blood stains, fecal spots, and shed skins
- Check mattress seams, bed frames, and nearby furniture
- Early detection is critical — infestations grow fast
- Professional treatment is usually necessary for established infestations
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