Pest Lexicon – Green Guardia

Bed Bugs: Recognize Bites, Droppings & Hiding Places – How to Act Correctly

Bed bugs are small, nocturnal insects that hide in sleeping areas and feed on blood. An infestation is unpleasant but manageable – the key is fast, structured action. Learn how to identify bed bugs, where they hide, and which measures are actually useful.

ⓘCimex lectularius · Bed Bug #Bites in rows · Fecal spots · Molted skins

What are bed bugs?

Bed bugs (Cimex lectularius) are flat, reddish-brown insects that are primarily active at night. During the day, they hide in cracks and crevices near the bed. Bed bugs are usually brought in (e.g., through travel, luggage, used furniture) and have nothing to do with a lack of cleanliness.

nocturnal hides in cracks is brought in

Important: Bed bugs are persistent and very good at hiding. If you have a concrete suspicion, professional help is often the fastest and safest way to truly end the infestation.

How to recognize an infestation

itchy bites, often in rows/clusters ("breakfast–lunch–dinner")
tiny black fecal spots on mattress seams, slats, bed frame
blood spots on sheets (e.g., from crushed insects)
molted skins (transparent "shells") in hiding spots
with heavy infestation: sweet, musty odor

Green Guardia Tip: First check the mattress seams, the bed frame (screw holes), and the slats. Bed bugs are rarely found "in the middle" of the mattress – they prefer edges/hiding spots.

Where do bed bugs hide?

mattress seams, labels, piping, zipper areas
slats, bed frame, screw holes, cracks
behind baseboards, outlets, wallpaper edges
upholstered furniture near the bed, nightstands
luggage, clothing, laundry baskets (if brought in)

Why does an infestation occur?

brought in after traveling (hotel, train/plane, vacation rental)
used furniture/mats, flea markets, classified ads
transfer via objects (rarely via neighboring apartments in multi-family buildings)

What to do if suspected? (useful & practical)

1. Do not move things around frantically

do not move furniture through the house (risk of spreading)
do not carry textiles around openly

2. Secure textiles immediately

pack bed linen, sleepwear, blankets airtight into bags
wash as hot as the material allows (check care label)
store cleanly & sealed afterward

3. Vacuum thoroughly & document

vacuum mattress seams, bed frames, baseboards, cracks thoroughly
dispose of vacuum bag/container immediately, sealed tightly
photograph findings (spots, moltings, insects) – this helps with assessment

4. Contact a professional company (often sensible)

usually the most effective way once an infestation is confirmed
prevents long-term "ping-pong" infestations

Why bed bugs must be taken seriously

Bed bugs hide very well and can survive in the smallest gaps. Individual measures are often insufficient because eggs and hiding spots are overlooked. A structured plan (securing, cleaning, monitoring – possibly professional help) is crucial.

Why the procedure counts: The less you spread them and the faster you target the hiding spots, the higher the chance of ending the infestation quickly.

FAQ about bed bugs

Are bed bugs a sign of being dirty?

No. Bed bugs are usually brought in (travel, furniture, luggage). Cleanliness can help discover them faster – but it does not prevent introduction.

Are "bites" sufficient proof?

Not always. Bites can have other causes too. More reliable evidence includes fecal spots, moltings, or finding an insect near the bed.

Should I throw away the mattress?

Usually not necessary – but without targeted treatment of the surrounding area, throwing it away often achieves little, as bed bugs can also be in the bed frame, baseboards, or furniture.

How can I prevent them (travel)?

Do not place luggage on the bed, check bed edges, leave clothing in the suitcase, and wash textiles as soon as possible after returning from a trip.