The present invention provides a bed bug repellent comprising a silicon dioxide powder having an oil-absorption of 35mL/100g or more. The present invention also provides a bed bug repelling composition comprising the bed bug repellent. The present invention also provides a method for repelling bed bug by bringing a silicon dioxide powder having an oil-absorption of 35mL/100g or more into contact with a bed bug.本發明係提供一種含有吸油量為35mL/100g以上的二氧化矽粉末之床蝨驅除劑。本發明亦提供一種含有上述床蝨驅除劑之床蝨驅除用組成物。本發明又提供一種以吸油量為35mL/100g以上之二氧化矽粉末接觸床蝨之床蝨驅除方法。A‧‧‧處理區域B1、B2‧‧‧未處理區域C‧‧‧黑紙
