To provide a simple cleaner which is easy in handling and producing and has a low production cost.

In the simple cleaner 1, a cleaning surface 6 for adsorbing dust by making contact with a floor surface and a folded surface 4 for covering an upper 5 of a slipper 2 are integrally connected through a folded edge 7, the cleaning surface 6 is provided with an engaging bag portion 3 engaged with a toe of the slipper 2 to hold the cleaning surface 6 to the slipper 2, a surplus portion 9, which is longer than the upper 5, of the folded surface 4 is folded into the upper 5 of the slipper 2, and the surplus portion 9 is held between the upper 5 and the instep of the foot. Thus the simple cleaner 1 is used by being fitted to the slipper 2.