Home Bed Bugs What Attracts Bed Bugs & What They Hate (Backed by Research)

What Attracts Bed Bugs & What They Hate (Backed by Research)

September 2, 2026

Bed bugs are attracted to the carbon dioxide you breathe out, your body heat and the odors on your skin and clothes, which is why they live within a few feet of where people sleep. They also seek dark, narrow cracks and clutter to hide in. They don’t care whether a home is clean or dirty. What bed bugs can’t survive is heat: 122°F kills them and their eggs instantly. Essential oils, light and repellents don’t keep them away.

Bed bug on fabric — Bed bugs find people by following carbon dioxide and body heat.

Table of Contents

What Attracts Bed Bugs

Carbon dioxide from your breath

Carbon dioxide is the main signal bed bugs follow to find a host. That is why bed bug monitors use dry ice or CO2 as a lure, and why bites cluster on sleepers.

Body heat and moisture

Bed bugs sense warmth and moisture from skin at close range and use them to find a spot to feed.

Skin and clothing odors

Chemical scents from skin draw bed bugs in, and they are attracted to odors left on worn clothing. When traveling, seal dirty laundry in plastic bags instead of leaving it on hotel floors and beds.

Dark, narrow hiding places

Bed bugs avoid light and squeeze into cracks no wider than a credit card, often barely wider than a toothpick. They prefer wood, paper and fabric over metal and plastic, and like rough, vertical surfaces such as headboards, bed frames and baseboards. Most stay within about 8 feet of where people sleep.

Clutter

Piles of clothes, papers and boxes, especially under the bed, give bed bugs more places to hide and make treatment much harder. Clutter doesn’t attract them, but it protects them.

Myths About What Attracts Bed Bugs

Dirt: bed bugs turn up in spotless homes and upscale hotels as well as cluttered ones. Cleanliness has no link to whether you get them.
Light: leaving lights on doesn’t stop hungry bed bugs from feeding.

Do colors attract bed bugs?

A University of Florida and Union College study found bed bugs preferred to hide in red and black shelters and avoided green and yellow ones. Their choices changed with sex, age and whether they had just fed. The lead researcher said that recommending yellow sheets based on the results would be stretching it.

What Bed Bugs Hate

Heat

Heat is the most reliable way to kill bed bugs. They and their eggs die at:

122°F: almost instantly
118°F: after about 90 minutes
Dryer on high: about 30 minutes kills all stages in clothes, bedding and shoes

Professional heat treatments raise a whole room above these temperatures. See bed bug heat treatment and steamers for bed bugs.

Extreme cold

Freezing works only at 0°F or colder, held for at least four days after the center of the item reaches that temperature. A home freezer that isn’t cold enough lets eggs survive. Don’t try to freeze a house.

Essential oils and natural sprays

Rutgers researchers tested 11 natural, essential oil-based bed bug products. Most killed few bed bugs, and only two (EcoRaider and Bed Bug Patrol) killed most nymphs when sprayed directly on them. None repelled bed bugs when carbon dioxide was present, and lab results may not hold up in real homes. Tea tree oil, lavender and peppermint are not proven bed bug repellents.

Rubbing alcohol

Alcohol kills bed bugs only when it soaks them directly, doesn’t reach hidden bugs or most eggs, and is highly flammable. See does rubbing alcohol kill bed bugs.

Insect repellents

Repellents made for ticks and mosquitoes don’t work nearly as well on bed bugs.

How to Make Your Bed Less Attractive

Pull the bed a few inches away from the wall and keep bedding from touching the floor.
Place interceptor cups under the bed legs to catch climbing bugs.
Use zippered mattress and box spring encasements so bugs can’t hide in seams.
Clear clutter from under and around the bed.
Wash and dry bedding on high heat regularly.
Inspect secondhand furniture and luggage before bringing them in; see how to prevent bed bugs.

Bed bug prevention supplies

Bed bug interceptor cups for bed legs
Zippered mattress encasement to remove hiding spots
Travel luggage liners for hotel stays
Handheld steamer for seams and cracks

As an Amazon Associate, Pestbugs earns from qualifying purchases.

FAQs

What attracts bed bugs the most?

Carbon dioxide from your breath is the strongest lure, followed by body heat, moisture and skin odors. That is why bed bugs gather where people sleep or sit for long periods.

Do dirty homes attract bed bugs?

No. Bed bugs are found in clean and dirty homes alike, and an infestation isn’t a sign of poor housekeeping. Clutter makes them harder to find and treat, but dirt doesn’t draw them in.

What smells do bed bugs hate?

No smell reliably keeps bed bugs away. In a Rutgers study, most essential oil products barely killed bed bugs, and none repelled them when a host’s carbon dioxide was present.

What color attracts bed bugs?

In a University of Florida study, bed bugs preferred hiding in red and black shelters and avoided green and yellow ones. The researchers cautioned that this doesn’t mean yellow sheets will protect you.

Does sleeping with the lights on keep bed bugs away?

No. Bed bugs prefer the dark but will still come out to feed in a lit room when they are hungry.

What temperature kills bed bugs?

Heat of 122°F kills bed bugs and eggs right away, and 118°F kills them in about 90 minutes. A clothes dryer on high for 30 minutes kills all stages. Freezing works only at 0°F or colder for at least four days.

Sources

Facts in this guide are checked against the sources above and reviewed when they change. See how we research in our editorial policy.