| 摘要 |
A cleaning device and a method for effecting cleaning, in which a pretreatment agent is applied to a cloth affixed over a vertical surface of an erected body made of a rigid material, the pretreatment agent being adapted to improve the cleaning effect of a detergent, and then, the detergent is applied to the cloth, after which, all the pretreatment agent, detergent, and dirt are sucked and removed from the cloth. Hence, a high cleaning effect can be achieved without causing any deterioration of the cloth.
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