To provide a cleaner capable of fully removing dust on different kinds of objects having an uneven surface such as key tops of key switches located on a keyboard as well as dust attached to a channel formed between key switches located side by side.

The present invention relates to a cleaner to remove dust on an object. The surface of the cleaner to be located facing to an object has flexibility. A plurality of blades which restore their original condition with its elastic deformation function when the load is removed even if it is deformed by the load formed in a staircase pattern so that they project, and the cleaner is provided with a mounting mechanism to mount a dust cloth to cover the blades.