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Signs of bed bugs

Identifying the signs of bed bugs at an early stage can help contain an infestation. These pests are very small and hide very well, so it’s easy to miss them in the early stages of an infestation. Many people don’t know they have bed bugs until they get bitten or see telltale spots on their sheets.

What are the early signs of bed bugs?

Some of the early signs of bed bugs include spotting shed skins. One of the first things people notice is tiny dark spots on sheets or mattresses, which may be bed bug droppings. You might also see small blood stains, left behind after bugs are crushed during sleep. In larger and more advanced infestations, there may also be a sweet, musty odor present in the affected area. Here’s a full list of the common signs of bed bugs:

  • Dark spots on sheets or mattresses: Tiny black dots may be bed bug droppings.
  • Small blood stains: Crushed bed bugs can leave small reddish stains on bedding.
  • Shed skins: Pale shed skins may collect near mattress seams or furniture cracks.
  • Musty or sweet odor: A strong musty smell can suggest a larger infestation.
  • Live bugs: Reddish-brown bugs hide in mattress seams, cracks, and tight crevices.

What typically causes a bed bug infestation?

A bed bug infestation often starts when bugs hitch a ride on luggage, secondhand furniture, or clothing. Travel, shared housing, and public spaces are common sources. Once inside, bed bugs hide near beds, furniture, and baseboards, close to where people sleep. Understanding how to check for bed bugs can help limit their spread.

brown bedbugs hiding in the crease of a matress

Where bed bugs hide

Bed bugs are experts at staying out of sight. They don't build nests like some other pests, but instead they squeeze into tight spaces where they can stay close to where people sleep or relax. 

These pests usually come out at night to feed and then return to their hiding places during the day.

Common hiding places include:

  • Mattress seams and box springs
  • Cracks in bed frames and headboards
  • Behind baseboards or wallpaper
  • Inside couch cushions or drawers
  • Behind picture frames or in electrical outlets.

They are most often found in bedrooms, but can spread to other rooms if an infestation is left unchecked.

Common symptoms of bed bug bites

The most common signs of bed bug bites are red, itchy bumps. The bites may show up in a line or cluster. 

What do bed bug bites look like? Some people have mild swelling or blisters. Persistent itching can also occur, leading to discomfort and potentially infection if scratched. Some others may have no reaction at all.

Other pests that may be mistaken for bed bugs

Not every small bug you find at home is a bed bug. Some pests look or behave in similar ways, which can make it hard to know what pest you’re dealing with. Fleas and carpet beetles are two common pests that are often mistaken for bed bugs. Unlike bed bugs, fleas are more active and can jump, while carpet beetles don’t bite but may still cause skin irritation.

Because these pests require different types of control, it’s important to get the right identification. Our technicians can inspect your property to identify the signs of bed bugs or any other type of pest. We can then recommend the best method of treatment.

A close-up of a bed bug

What do bed bugs look like?

Bed bugs are small, flat, and oval-shaped insects. Adults are reddish-brown and about the size of an apple seed, roughly 3/16 inch long. Younger bed bugs, called nymphs, are lighter in color and more translucent until they feed. You may also notice tiny white eggs or pale, yellowish shed skins near beds, furniture, or baseboards. 

If you’re unsure what bed bugs look like, a professional inspection can help confirm what you’re seeing.

Professional bed bug control services from Presto-X

Our bed bug control services are designed to help find and treat bed bugs properly. Our technicians know where to look and how to treat areas safely and efficiently, with minimal disruption to your operations.

 

Frequently asked questions

You may experience bites or see dark stains on bedding, shed skins, or live reddish-brown bugs, about the size of an apple seed.

They hide in cracks and crevices, mattress seams, furniture, and other tight spots close to where people sleep or relax.

It’s unlikely. Bed bugs can survive for months without feeding, which means they often stay hidden until they’re active again. Without professional treatment, infestations tend to worsen over time rather than go away alone.

Some people notice signs of bed bug bites or small stains on sheets within days. Others may not react to bites at all. The timeline depends on the size of the infestation and your sensitivity to bed bug bites.

Look for live bugs, tiny dark spots, or shed skins. Because they hide well, a professional inspection is often the most reliable way to confirm activity.

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