How Do You Find Bed Bugs? Step By Step

Finding bed bugs is a matter of knowing where they hide and what signs they leave behind. You check the seams of your mattress, the cracks of your bed frame, and the edges of your baseboards with a flashlight and a credit card. You are looking for live bugs, shed skins, and small dark spots of dried blood or excrement. Start with the bed itself, then work outward to every crack and crevice in the room.

What Do Bed Bugs Look Like?

Adult bed bugs are about the size of an apple seed. They are flat, oval, and reddish-brown. After they feed on blood, they swell up and turn a deeper red. Nymphs, which are the immature bugs, are smaller and lighter in color. They can be nearly translucent before they feed.

You are also looking for their eggs. Eggs are tiny, about the size of a pinhead, and are a pale white or cream color. They are often glued to surfaces in clusters, which makes them hard to see without a bright light and close inspection.

Do not confuse bed bugs with other insects. Carpet beetles, fleas, and cockroach nymphs are all commonly mistaken for bed bugs. If you find an insect and are not sure what it is, capture it in a sealed bag or container. A professional can identify it with certainty.

Where Do Bed Bugs Hide?

Bed bugs prefer to be close to where people sleep. They do not live on the body. They hide in the dark during the day and come out at night to feed. Their favorite spots are within a few feet of the bed.

Start with the mattress and box spring. Check the seams, folds, and tufts of the mattress. Run a credit card or similar flat edge along the seams to pull out bugs, eggs, or debris. Check the box spring carefully, especially along the fabric covering and the wooden frame underneath.

Then move to the bed frame and headboard. Bed bugs hide in the joints, screws, and cracks of wooden or metal frames. If the headboard is mounted to the wall, check the brackets and the gap between the headboard and the wall.

After the bed, check the surrounding area. This includes baseboards, electrical outlets, picture frames, curtain rods, and nightstands. Bed bugs will spread to any nearby crack or crevice if the infestation grows. In heavy infestations, they can be found in sofas, chairs, and even behind wallpaper.

What Are the Signs of Bed Bugs?

Live bugs are the most obvious sign, but they are not always easy to find. Bed bugs are nocturnal and hide well. You may see other evidence before you see a live bug.

Look for dark spots on bedding or mattresses. These spots are bed bug excrement. They look like small dots made with a black marker. They can bleed into fabric like ink.

Look for rust-colored stains. These are crushed bed bugs or dried blood from their bites. You might see these on sheets or pillowcases.

Look for shed skins. As nymphs grow, they molt and leave behind their outer shells. These are pale yellow and look like empty exoskeletons. You will often find them near their hiding spots.

Check for a sweet, musty odor. Heavy infestations produce a smell that some describe as similar to coriander or a wet, moldy towel. This odor comes from the bugs’ scent glands and is only noticeable when the infestation is large.

How Do You Find Bed Bugs? Step By Step

Use a bright flashlight and a magnifying glass. Turn off other lights in the room so the flashlight beam is easier to see. Work slowly and methodically. Do not rush.

Step 1: Strip the bed. Remove all sheets, pillowcases, and blankets. Place them directly into a sealed plastic bag so any bugs cannot escape into the room.

Step 2: Inspect the mattress. Start at the top seam and work your way around the entire edge. Check all seams, tufts, and any tears in the fabric. Use a credit card to scrape along seams and pull out hidden bugs or eggs.

Step 3: Inspect the box spring. Check the fabric on the bottom and sides. Look under the box spring for bugs hiding along the frame. If the fabric is torn, check inside.

Step 4: Inspect the bed frame. Check every joint, screw hole, and crack. Pay close attention to where the frame pieces connect. Bed bugs squeeze into gaps that are as thin as a credit card.

Step 5: Check the headboard. If it is attached to the wall, remove it if possible. Check the back, the brackets, and the wall behind it.

Step 6: Expand your search. Check baseboards along the walls near the bed. Check nightstands, lamps, clocks, and books on the nightstand. Check electrical outlets and switch plates. Use a flat screwdriver to gently pry off outlet covers and look inside.

Step 7: Check furniture beyond the bed. Chairs, sofas, and dressers near the bed can harbor bed bugs. Check seams, cushions, and drawers. Remove drawers and inspect the inside of the furniture frame.

Step 8: Use a flashlight to cast light at an angle across surfaces. Bed bugs and their eggs cast a shadow when light hits them from the side. This technique helps you spot things you would miss with direct light.

How Do Bed Bug Bites Help With Detection?

Bites alone do not confirm bed bugs. Many people have no reaction to bed bug bites at all. Others develop itchy red welts. The bites often appear in a line or cluster, but this is not guaranteed. Mosquito bites, flea bites, and other skin conditions can look identical.

If you wake up with unexplained bites, it is a reason to inspect your bed. But do not assume bed bugs are the cause without finding physical evidence. The only reliable confirmation is finding the bugs, their eggs, or their droppings.

How to Inspect a Hotel Room or New Home

When you travel, inspect the room before you unpack. Place your luggage in the bathroom or on a hard surface away from the bed while you check the sleeping area.

Check the mattress and box spring seams first. Then check the headboard and the bed frame. Pull back the sheets and look at the mattress corners. Look for the same signs you would at home: live bugs, dark spots, shed skins, and eggs.

Inspect the furniture near the bed. Check the seams of upholstered chairs and sofas. Check the curtains and the area behind the nightstand. If you find any signs of bed bugs, request a different room. The new room should be on a different floor if possible, not just across the hall.

When you return home from travel, inspect your luggage before bringing it inside. Vacuum your suitcase and wash all clothing in hot water. Dry everything on high heat for at least 30 minutes. Heat kills bed bugs at all life stages.

What to Do If You Find Bed Bugs

Do not panic. Bed bugs do not transmit disease, and an infestation can be eliminated. But do not try to handle a large infestation with over-the-counter sprays alone. These products often fail and can be dangerous if used incorrectly.

Call a licensed pest control professional. Bed bug elimination usually requires multiple treatments and a thorough understanding of where the bugs hide. Professionals use a combination of methods, including vacuuming, steaming, and approved insecticides.

While you wait for treatment, do not move your bed to another room. This can spread the bugs. Do not throw away your mattress unless a professional tells you it is necessary. Treatment can often save it.

Wash all bedding and clothing in hot water and dry on high heat. Vacuum the mattress, box spring, and surrounding floors daily. Empty the vacuum bag or canister into a sealed plastic bag and dispose of it outside immediately.

Seal cracks and crevices in baseboards and furniture with caulk. This reduces hiding spots and makes treatment more effective. Reduce clutter in the room. Clutter gives bed bugs more places to hide and makes inspection and treatment harder.

How to Prevent Bed Bugs From Spreading

Bed bugs spread by hitchhiking. They move from one place to another on luggage, clothing, furniture, and other personal items. They do not jump or fly. They crawl.

When you bring secondhand furniture into your home, inspect it thoroughly before bringing it inside. This is especially important for mattresses, box springs, and upholstered furniture. Some people choose not to bring secondhand mattresses into their homes at all.

Use protective covers on your mattress and box spring. These encasements trap any existing bugs inside and prevent new bugs from hiding in the seams. They make inspection easier and treatment more effective.

If you live in an apartment or multi-unit building, seal gaps around pipes and electrical outlets. Bed bugs can move between units through walls and shared spaces. If you have bed bugs, tell your landlord or building manager. Treating only your unit may not solve the problem if neighboring units are also infested.