Moisture, mold & pests

Signs of bed bugs

Small rust-colored spots on sheets, shed skins, and a musty odor near the bed are classic bed bug signs, and early detection makes treatment much easier.

Difficulty
Professional only
Time
1–2 hours to inspect and do initial cleanup
DIY cost
$30–$100
Pro cost
$300–$1500+

Symptoms

  • Small reddish-brown insects, about the size of an apple seed, in mattress seams or bed frame crevices
  • Tiny dark or rust-colored spots on sheets or the mattress
  • Shed, pale exoskeletons in bedding or furniture seams
  • A sweet, musty odor in a heavily infested room

Likely causes

  • CommonBed bugs brought in on luggage, secondhand furniture, or clothingThey're excellent hitchhikers and commonly enter homes this way rather than by flying or jumping.
  • PossibleSpread from a neighboring unit in multi-family housingBed bugs can travel through wall voids or shared spaces between adjacent units.
  • PossibleEstablished infestation that has been growing undetectedPopulations can grow for weeks or months before signs become obvious.

What to do

  1. Check mattress seams, the bed frame, headboard, and nearby baseboards closely with a flashlight, looking for live bugs, spots, or shed skins.
  2. Strip and wash all bedding in hot water and dry on the highest heat setting the fabric allows.
  3. Vacuum the mattress, bed frame, and surrounding carpet or flooring thoroughly, then seal and dispose of the vacuum bag outside.
  4. Encase the mattress and box spring in a bed bug-proof cover to trap any remaining bugs and prevent new ones from hiding there.
  5. Avoid moving infested furniture to other rooms, which can spread the problem throughout the house.
  6. Check adjoining rooms and any secondhand furniture recently brought in for similar signs.
  7. Contact a licensed pest control professional for confirmation and treatment, since bed bugs are notoriously difficult to eliminate with DIY methods alone.

Tools and parts

  • Flashlight
  • Vacuum
Mattress encasementSearch: “bed bug proof mattress encasement”

When to call a pro

Call a licensed pest control professional experienced with bed bugs, since heat or chemical treatment usually requires expertise most homeowners don't have.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

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