To provide a striped refuse bag 10a corresponding to refuse fee-charging without using an IC flag or the like having problems of separation and a costs.

The striped refuse bag 10a is given stripes over the entire surface, which comprises red R, green G, blue B and clear and colorless T vertical stripes laterally repeated in turn. The refuse bag carried in by a user is thrown in a check chamber 45 of a refuse bag checking device 30 and is photographed with a camera 47. A photographed image is formed based on output of the camera 47 and the photographed image is partitioned into grids of a predetermined size in a lattice arrangement. The grid including at least one of the stripe colors other than a background color is sorted as grid A, the grid including all the stripes is sorted as grid B and R (= the number of grids B / the number of grids A) is calculated. When RRo, the refuse bag is determined to be the designated, striped refuse bag 10a.