Which method is described as effective for killing bed bugs in infested mattresses?

• A. Vacuuming and brushing
• B. Sunlight exposure
• C. Steam cleaning
• D. Cold-water washing

Answer: (C)

Bed bugs hide inside mattresses, especially in seams and tufts, so treatment must reach those hidden spots. Steam cleaning applies hot, penetrating steam that can get into those cracks and kill bed bugs at all life stages, including eggs, when used properly. This makes steam cleaning more effective than methods that only remove surface pests or don’t reach the interior hiding places—like simple vacuuming and brushing, sunlight exposure, or cold-water washing. To work well, move the steam slowly over all fabric and seams and allow the mattress to dry completely after treatment.