Bed bugs forced students at Ohio State University in 114 rooms this week to pack up and leave their rooms while exterminators sprayed several chemicals to remove them.
School officials informed students to wash all clothing and bedding in hot water or dry them for over 30 minutes on high heat to kill any remaining bugs and their eggs.
Bed bugs are nocturnal bloodsucking parasites that make their homes in mattresses and bedding. They feed mostly at night when their host is asleep.
They leave behind a painless reddish welt when they bite. Experts say bed bugs do not pose a serious health risk.
A bed bug infestation can be recognized by blood stains from crushed bugs or by rusty spots of excrement on sheets and mattresses, bed clothes, and walls.
Control of bed bugs is best achieved by preventive measures, sanitation and chemicals applied to targeted sites.
Inspection efforts should concentrate on the mattress, box springs, and bed frame, as well as crack and crevices that the bed bugs may hide in during the day or when digesting a blood meal.
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