Bedbugs have reappeared, what should I do? - briefly
If bedbugs return, isolate the affected space, launder all fabrics at ≥60 °C, and apply a registered insecticide or engage a licensed exterminator. Conduct follow‑up inspections and use preventive measures such as mattress encasements.
Bedbugs have reappeared, what should I do? - in detail
When a previous infestation reappears, immediate action prevents further spread.
First, confirm the presence of Cimex lectularius by inspecting seams of mattresses, box‑spring frames, headboards, and furniture crevices. Look for live insects, shed skins, or dark fecal spots.
Next, isolate the affected sleeping area. Remove bedding and wash all textiles at ≥ 60 °C, followed by a high‑heat dryer cycle. Encase mattresses and box springs in certified zippered covers that trap insects and deny access to new colonies.
Thoroughly vacuum carpets, floorboards, and upholstered furniture. Empty the vacuum chamber into a sealed bag and discard it outdoors.
Apply residual insecticide formulated for bed‑bug control to cracks, baseboards, and voids. Follow label directions regarding concentration, safety precautions, and re‑treatment intervals.
Consider non‑chemical measures: steam‑treat surfaces at ≥ 100 °C for several minutes, and use desiccant dusts (e.g., diatomaceous earth) in hidden voids.
If the problem persists after these steps, engage a licensed pest‑management professional. Professionals can perform heat‑treatment (≥ 50 °C for several hours) or fumigation, both proven to eradicate resistant populations.
Finally, establish a monitoring routine. Place interceptor traps under each leg of the bed and inspect weekly for new activity. Early detection enables prompt response and reduces the likelihood of a full‑scale resurgence.