They were almost gone โ then we brought them back
Bed bugs (Cimex lectularius) have been human parasites for at least 3,500 years โ found in Egyptian archaeological sites dating to 1350 BC. By the mid-20th century, widespread DDT use had nearly eradicated them in developed countries. Then DDT was banned, international travel exploded, and second-hand furniture became fashionable. Bed bugs came roaring back.
Today they're found in all 50 states and every continent except Antarctica. They've been documented in five-star hotels, college dormitories, hospitals, movie theaters, and public transit โ infestation has absolutely no relationship to cleanliness or socioeconomic status. Any human can bring them home.
Despite widespread fear, there is no documented evidence that bed bugs transmit any disease to humans. Their bites cause itching, sleep disruption, and psychological distress โ which can be severe โ but they are not vectors of any known pathogen. The primary health impact is from secondary skin infection due to scratching, and significant mental health effects from the anxiety and sleep deprivation an infestation causes.
What a bed bug looks like โ and what to look for beyond the bug itself
Most people never see a live bed bug โ they find the evidence first. Knowing what physical evidence to look for is more important than identifying the insect itself, because bed bugs are exceptionally good at hiding.
How to inspect your home and confirm an infestation
Systematic inspection is critical before any treatment begins. Treating the wrong areas โ or treating without confirming โ wastes time and money and can spread the infestation. Follow this protocol in order.
Determine your infestation level before choosing treatment
The six ways bed bugs hitchhike into homes
Heat, chemicals, and professional options โ what actually works
Bed bug treatment requires a multi-pronged approach. No single method achieves 100% elimination. Successful programs combine a primary kill method (heat or chemical) with residual protection (CimeXa dust) and interception (monitors). Here's everything you need to know.
Heat penetrates mattress interiors, box spring frames, and furniture where chemicals can't reach. All life stages die at 118ยฐF sustained for 20 minutes. Professional whole-room heat treatment achieves near-100% kill in a single treatment. DIY heat treatment with a portable heater is effective for individual items.
No chemical spray penetrates mattress interiors, box spring centers, or reaches bugs deep in wall voids. Chemicals work on exposed surfaces โ they must be used alongside mechanical treatment (heat, encasements) to be effective. Many bed bug populations have developed pyrethroid resistance. Rotate between chemical classes.
Call a professional for: Stage 2 or 3 infestations, multi-unit buildings, any infestation that hasn't responded to DIY treatment, and any case where wall harborage is suspected. What to ask for: "Do you offer whole-room heat treatment?" and "What is your chemical protocol if heat isn't used?" A reputable company will offer heat as primary treatment and use non-pyrethroid chemicals (CimeXa, chlorfenapyr) as residuals. Avoid companies that offer only spray treatment.