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How to Know if You Have Bed Bugs: 6 Signs You Should Watch Out

Learn how to know if you have bed bugs at home, what to do after that, and how to prevent the problem from happening again in the future.

Liputan6.com, Jakarta - How to know if you have bed bugs? This is a question many people ask when they wake up with strange bites on their skin. Bed bugs are small insects that can live in your home without you seeing them. They hide during the day and come out at night to bite you while you sleep.

These tiny pests can make your life difficult. They cause itchy bites and can spread quickly through your home. Many people feel worried and stressed when they think about bed bugs in their beds.

In this article, we will talk about how to know if you have bed bugs at home and what you need to do after that. We will also share some tips to prevent the problem from happening again in the future. We gathered the information from various sources, Tuesday (10//12/2025).

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What is Bed Bug?

A bed bug is a small insect that feeds on human blood. These bugs are reddish-brown in color and have flat, oval-shaped bodies. Adult bed bugs are about the size of an apple seed, measuring 5 to 7 millimeters long. They do not have wings, so they cannot fly. However, they can move quickly across floors, walls, and furniture.

Young bed bugs are called nymphs. They are smaller than adults and look pale yellow or translucent. Bed bug eggs are tiny and white, about the size of a pinhead. Because they are so small, eggs are very hard to see with your eyes.

Bed bugs bite people to feed on their blood. They usually bite at night when you are sleeping. The bites appear as small, red, itchy bumps on your skin. On darker skin, the bites may look purple instead of red. Some people show no reaction to bed bug bites at all, while others may have allergic reactions with severe itching or swelling.

These insects can live in many places, not just beds. They hide in furniture, luggage, clothing, and even electrical outlets. Bed bugs can survive for several months without feeding, which makes them hard to eliminate. They are found in homes, apartments, hotels, dormitories, shelters, buses, trains, and cruise ships.

It is important to know that bed bugs do not spread diseases to humans. However, their bites can cause discomfort, sleep problems, anxiety, and stress. Scratching the bites too much can lead to skin infections.

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How to Know if You Have Bed Bugs

Now, it's time to learn how to know if you have bed bugs at home. Bed bugs are experts at hiding, so you may not see the insects themselves. Instead, you need to search for clues that show they are living in your home.

Bite Marks on Your Skin

The most common sign is bite marks on your body. These bites usually appear on areas of skin that are exposed while you sleep, such as your face, neck, arms, hands, and legs. Bed bug bites often form patterns. You may see them in a straight line, zigzag pattern, or clusters of three or four bites close together.

Bloodstains on Bedding

Look for small bloodstains on your sheets, pillowcases, or mattress. These red or rust-colored stains happen when bed bugs are crushed while you move during sleep. You might also see blood from fresh bites that continue to bleed slightly after the bugs finish feeding.

Dark Spots and Fecal Marks

Bed bugs leave behind tiny black or dark brown spots on surfaces. These spots are bed bug droppings, which consist of digested blood. Fresh droppings look like small ink dots from a ballpoint pen, about 1 to 2 millimeters wide. Old droppings soak into fabric and leave permanent stains.

Eggs and Shed Skins

Female bed bugs lay hundreds of tiny eggs that look like pale yellow specks. You might find these eggs near mattress seams and hidden areas. As young bed bugs grow, they shed their skin five times. These shed skins look like empty, translucent husks that resemble the bugs themselves.

Musty Odor

A sweet, musty smell in your bedroom can indicate a bed bug problem. This odor comes from bed bug waste, dead bugs, and chemicals they release. The smell is faint when few bugs are present but becomes stronger as the infestation grows.

Live Bed Bugs

If the infestation is large, you may see actual bed bugs. Check the seams, piping, and tags of your mattress and box spring. Look in cracks on your bed frame, headboard, baseboards, and furniture near your bed. Use a flashlight to inspect dark corners and crevices carefully.

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What to Do When You Have Bed Bugs

After you know how to know if you have bed bugs and find signs of them in your home, it is time to take action. Follow these steps to control and eliminate the infestation.

Step 1: Confirm the Problem

Collect a sample of the insect you found. Show it to a pest control expert or extension agent who can identify it for free. Make sure the pest is actually a bed bug and not another insect like a carpet beetle or cockroach nymph. Proper identification is important before you start treatment.

Step 2: Clean Your Bedding and Clothing

Wash all bedding, sheets, pillowcases, blankets, and clothing in hot water. Use the highest heat setting on your dryer to kill bed bugs and their eggs. For items that cannot be washed, put them in the dryer on high heat for at least 30 minutes. Place stuffed animals, shoes, and other non-washable items in sealed plastic bags.

Step 3: Vacuum Thoroughly

Vacuum your mattress, bed frame, floors, furniture, and all cracks and crevices in your room. Pay special attention to seams, corners, and hidden areas. After vacuuming, immediately seal the vacuum bag in a plastic bag and throw it away in an outdoor trash container. This prevents bed bugs from escaping back into your home.

Step 4: Use Mattress Covers

Purchase special bed bug-proof covers for your mattress and box springs. These protective covers trap any remaining bugs inside and prevent new bugs from entering. Keep the covers on for at least one year to ensure all bugs die.

Step 5: Remove Clutter and Seal Cracks

Get rid of unnecessary items that create hiding places for bed bugs. Use silicon caulk to seal cracks in walls, baseboards, and furniture. Repair peeling wallpaper and tighten loose electrical faceplates. This forces bed bugs out of their hiding spots.

Step 6: Consider Professional Help

For severe infestations, hire a professional pest control company with experience in bed bug treatment. Professionals use specialized equipment and approved pesticides to eliminate bed bugs safely and effectively. They may use heat treatments or other methods that work better than home solutions.

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How to Prevent Bed Bugs

Now that you understand how to know if you have bed bugs, learning prevention methods will help protect your home from future problems. Here are important steps to keep bed bugs away:

1. Inspect Secondhand Items

Check all used furniture, mattresses, and clothing carefully before bringing them into your home. Never take mattresses, sofas, or upholstered furniture from the street or curb. Bed bugs often hide in secondhand items and can easily move to your home.

2. Be Careful When Traveling

When staying in hotels, inspect the mattress seams for bed bug signs before unpacking. Place your luggage on a luggage rack or dresser, not on the bed or floor. When you return home, wash all travel clothing in hot water and dry on high heat immediately.

3. Reduce Hiding Places

Keep your home clean and clutter-free. Vacuum regularly, including under beds, behind furniture, and along baseboards. A tidy home gives bed bugs fewer places to hide and makes them easier to spot.

4. Protect Your Bed

Use protective covers on your mattress and box springs. Check the covers regularly for tears or holes. Move your bed away from walls and ensure bedding does not touch the floor. This makes it harder for bed bugs to reach you while sleeping.

5. Seal Entry Points

If you live in an apartment building, install door sweeps under doors to prevent bed bugs from entering from hallways. Seal cracks around baseboards, electrical outlets, and pipes. This blocks bed bugs from traveling between units.

6. Check Your Home Regularly

Inspect your bed, furniture, and bedroom every few weeks for early signs of bed bugs. Early detection makes treatment easier and less expensive. Look for bite marks, bloodstains, dark spots, and other warning signs.

7. Use Plastic Bags in Laundromats

When using shared laundry facilities, transport dirty clothes in sealed plastic bags. After drying, put clean clothes directly into a new bag. Fold your clothes at home to avoid contact with potentially infested surfaces.

By following these prevention tips and knowing the early warning signs, you can protect your home from bed bugs. Regular inspection and careful habits will help you avoid the stress and cost of dealing with an infestation. Remember, finding bed bugs early makes them much easier to eliminate.